Sources Of Radio Emission Research Articles

Моделирование процесса позиционирования источников радиосигналов в геоинформационных системах

The application of the tools of the Anylogic simulation model development environment is described, which makes it possible to clearly understand the basic principles of identifying mobile objects that are sources of radio emission. The article presents the main research results of various approaches to solving the problem of positioning radio signal sources based on measuring the level of its power by base stations of wireless data transmission networks. The positioning problem was solved under conditions of high mobility of the radio signal source. To solve the problem, a set of methods was used: trilateration, fuzzy logic, statistical test method (Monte Carlo), splitting method, as well as heuristic. The results obtained were tested in the developed prototypes in the form of simulation models in the Anylogic environment. Field measurements made in real operating conditions of positioning systems were used as initial data. Within the framework of this work, the following main results were obtained: implementation of a complex of modeling algorithms that carry out a number of random processes: motion of radio signal sources and propagation of radio waves; algorithms that implement the analytical calculation of the estimated location area based on various methods. A complex of simulation models of positioning systems has been developed, which makes it possible to visualize the determination of the location of a radio signal source in an urban environment, taking into account its mobility. Conclusions are formulated regarding the results of the conducted research. The scientific significance of the work lies in the development of a heuristic positioning algorithm based on sector partitioning and fuzzy logic. The practical value of the work lies in the development of a set of algorithms and their practical implementation in the form of applications in the Java language for the Anylogic modeling environment, which allow investigating the effectiveness of various predictive algorithms for positioning accuracy.

Учет фазовых искажений, вызванных движением геостационарных ретрансляторов, при местоопределении наземных источников радиоизлучения

Currently, there are often cases of illegal use of the resource of relay satellites located in geostationary orbit, and the creation of unintentional and deliberate interference with legal users of satellite communication systems, for example due to non-compliance with the power standards of radio transmitting devices and antenna radiation patterns, as well as the rules for the frequency spectrum regulating. One of the possible stages of the response by the radio frequency service and satellite systems operators to such situations may be an operational assessment of locating of the interference ground radio emission sources that violate the established requirements. The existing methods for estimating the coordinates of radio emission sources operating through geostationary satellites-repeaters involve calculating the Cross-Ambiguity Function (CAF) of signals received from several satellites that relay the signals of the main and side lobes of the antenna pattern of the geolocated source. In the case of a low received signals SNR, it is required to record signals for a long time, and in such cases, to achieve a sufficient SNR at the correlator output, it is necessary to take into account not only the Doppler frequency shift between the signals, but also the change in the frequency shift caused by the change in the velocity vectors of the repeater satellites. The aim of this work is to study the recording duration, at which it is required to take into account phase distortions caused by a change in the speed of the repeater satellite and their effect on the SNR at the correlator output, as well as to develop a method for accounting for such distortions. The theory of digital signal processing and the method of simulation were used as research methods. As a result of the study, an assessment was made of the duration of the signal recording, at which the Doppler frequency shift can be considered constant; introduced the concept of a modified CAF, which takes into account the change in the Doppler frequency shift due to its approximation by a linear function; the maximum duration of signal recording was estimated, at which the proposed linear approximation is valid. It is concluded that in the case of using the modified CAF, the minimum duration of signal recording, at which the absence of correlator output SNR degradation will be guaranteed, is 8.1 times greater than when using the traditional CAF.

Methods for estimating coordinates and motion parameters sources of radio emission in goniometric two-position systems airborne radio monitoring. Part 2. Algorithms for nonlinear estimation

Methods for estimating coordinates and motion parameters sources of radio emission in goniometric two-position systems airborne radio monitoring. Part 2. Algorithms for nonlinear estimation

Mathematical model of geolocation of a satellite communication station using one relay satellite

At present, multi-satellite geolocation systems based on the TDOA are actively used to localization of radio emission sources in satellite communication systems operating via relay satellites without on-board processing. In General, information about the location of the radio emission sources is contained in the difference of the inclined range from the multiple fixed points with known coordinates. Such points of space in the classical geolocation system are two or more relay satellites in geostationary orbit. It is not always possible to have two or more satellites retransmitting the same signal. Therefore, it is necessary to develop a mathematical model for geolocation using a single relay satellite. Single-satellite geolocation is based on the use of Doppler, TDOA, or phase direction finding methods. With this approach, it is desirable that a single satellite has the ability to move in a controlled manner, either in altitude or at different speeds relative to its standing point. Moving the satellite along the equator in position and along the meridian in height allows you to calculate several orthogonal bases of estimates of the inclined range to the radio source. In this case, the determination of coordinates is based on the increment of the distance of the object's signal runs between the end points of each base. This provides the construction of position lines (hyperballs), the intersection of which is the source location. If the movement of the satellite along the equator and the meridian is performed with a change in speed, then geolocation is based on measurements of several orthogonal components of the Doppler frequency shift of the radio source signals. The base will be called two, four or more pairwise taken orbital positions of the satellite at points with fixed coordinates; S x y z1 1 1 1( , , ) S x y z2 2 2 2( , , ); S x y z2 2 2 2( , , ) S x y z3 3 3 3( , , ); etc. in all possible combinations. An arbitrary inclined base formed in the spacecraft orbit has an extension of Бп (x2  x1)2  (y2  y1)2  (z2  z1)2 . Differential range Дд = Дн2 – Дн1. To geolocate the M-object, you must: 1. Measure the difranges between M over two or more different shifted Дн bases at multiple satellite drift positions – Дд1, Дд2, ..., Дд4, etc. 2. Calculate the parameters al, bl, cl of each l-th hyperbolic surface of the section of the conic equations of the geometric location of the points of position M with the measured Дд1, Дд2, ..., Дд4 and the known Дн. Construct a common point of intersection of several such hyperbolic surfaces of the cross-section of the conic equations of the geometric location of the points of the position of the object M(x, y, z). The resulting vector of linear coordinates M(x, y, z) of the object must be converted from geocentric to geographical coordinates of the spherical coordinate system of the object M (longitude, latitude, Position-vector).

Однопозиционный метод определения координат источника радиоизлучения на земных трассах по совокупности отражений его сигнала от местных предметов

Electronic intelligence is an important element of electronic warfare, which «is not announced and never stops». The purpose of electronic reconnaissance is to detect the emitting radio-electronic means of a potential enemy, to determine its location and radiation parameters using passive (non-emitting equipment). Electronic warfare, even in peacetime, is a promising area of development. The use of passive methods allows work to be carried out covertly, without detection. The peculiarity of the proposed method is that a priori information about the objects that reflected the signal is not required. Determination of the coordinates of the emitter is carried out by determining the delay between the arrival of the direct signal and the set of reflections from the terrain. The use of detailed, for today, satellite maps of the terrain allow with some accuracy to determine the coordinates of reflecting objects on the ground. The coordinates of the receiving point can also be determined with high accuracy using global navigation systems. The data entered the computer and the recording of signals obtained as a result of observing the air allows us to determine the coordinates of the radio emission source. The algorithm proposed in the article allows reducing the number of receiving points to one and using a phase direction finder to determine the direction of signal arrival. Evaluation of the potential accuracy of the method showed the possibility of practical application, while better results can be obtained when improving the algorithm in terms of improving the algorithms for determining the times of arrival of signals, algorithms for their extraction and post-processing of experimental data.

Estimation of trajectory parameters of radio radiation sources in multi-position complexes by the maximum likelihood method

The paper presents a new approach to the secondary processing of radar information in multi-position passive complexes. The proposed approach is based on the use of maximum likelihood estimates of discrete measurement counts at finite time intervals, taking into account the motion of the radio emission source. The advantage of the proposed approach is the possibility to work on non-full measurements. The disadvantage is the delay in the output of the solution, as well as a decrease in the rate of output of the solution. The article presents an analysis of the effectiveness of the proposed approach, as well as the results of testing the developed algorithm on real measurements.

Multi-channel interference source detector

Modern radars, along with the detection and measurement of target coordinates against the background of interference, must solve the problem of detecting radio emission sources and measuring their coordinates. Detection of interference, as well as targets, in the radar is provided in the main (total) channel based on the analysis of the rangefinder-Doppler portrait of the received signal. The main disadvantage of such a detector is that the interference coming along the side lobes of the sum antenna and falling into the dip of the antenna radiation pattern may not be detected. Therefore, the problem arises of developing and analyzing algorithms for detecting interference in a radar with several receiving channels. The article discusses the logical, energy, correlation and eigenvalues of the cross-correlation matrix of the received signals interference detectors for two receiving channels. Their characteristics are given. It is shown that two-channel interference detectors based on the analysis of the eigenvalues of the cross-correlation matrix have the highest efficiency. Energy and logical algorithms are quite a bit inferior to them. The developed algorithms make it possible to effectively detect radio emission sources even when they are in the dip of one of the antenna patterns.

МЕТОД ТЕХНІЧНОГО ОБҐРУНТУВАННЯ ВИМОГ ДО ВИЯВЛЕННЯ-РОЗДІЛЕННЯ ГРУП БЕЗПІЛОТНИХ ЛІТАЛЬНИХ АПАРАТІВ

Modern unmanned aerial vehicles (UAVs) perform a wide range of tasks in the military sphere. The expansion of the range of such tasks causes constant technical improvement of both the drones themselves and the means of countering UAVs. The direction of tactics and technics for using drones as part of a group is rapidly developing.The existing countermeasures have limited capabilities to detect UAV groups and resolve them in the group. Thus, there is an acute problem of group detection and resolving of UAV groups.At the stages of analysis and assessment of this problem, the requirements for the detection and resolving of UAV groups must be technically justified.The purpose of this article is to develop a method to improving the quality of detection and separation of UAVs as sources of radio emission (SRE), by improving the known method of technical justification of requirements based on the use of adaptive direction finders with superresolution.As result of the study, it was found that the steepness of the change of the weight vector signal in the area of directions on SRE is much greater than the steepness of the angular spectrum peaks at the output of the adaptive antenna array. This property was investigated and used to increase the angular resolution of the UAV’s SREs in adaptive direction finder. The estimation of the boundary angular resolution is obtained by using the weight vector signal as an angular power spectrum depending on the parameters of the input signal.

Accuracy of Positioning of Ground Sources Using Geostationary Repeaters

Introduction. Currently, there is a significant increase in the number of relay satellites in geostationary orbit. However, frequent incidents of illegal use of the satellites frequency resource, as well as unintentional and deliberate interference with other users are fixed. In this regard, it becomes necessary to evaluate accuracy and applicability of various methods for determining the location of sources of illegal and interfering radio emission with different signal parameters and with different levels of uncertainty for relay satellite coordinates and velocities.Aim. To study and to evaluate the accuracy of methods of geolocation of radio emission sources operating through geostationary relay satellites, with different signal parameters and with different levels of uncertainty for relay satellite coordinates and velocities.Materials and methods. Imitation modeling and the theory of digital signal processing were used.Results. Factors influencing the accuracy of the estimation of TDOA and FDOA parameters when determining the position of radio emission sources, which operate via relay satellites located in geostationary orbit, were considered. As a result of simulation, the estimate of the accuracy of the considered geolocation methods was obtained. It depends on the bandwidth of radio emission source signal, on the recording duration and on the level of a priori uncertainty relatively the relay satellites coordinates and velocities. Recommendations for the application of the considered methods in various conditions were formulated.Conclusions. Conclusions and recommendations formulated as a result of the study, will allow one to choose the most appropriate geolocation method to improve the accuracy of radio emission sources locating depending on conditions and signal parameters.

Interval and Point Direction Finding of Radio Emission Sources for Broadband Radio Monitoring

Introduction. The point and interval direction finding of radio sources is used for broadband radio monitoring in the frequency domain. The initial data for broadband radio monitoring are spectral samples obtained from an M-element antenna array by multichannel reception. Point direction finding is based on a grouping of point estimates of azimuth and elevation angle formed for each frequency sample, in which signal components are detected. A single estimate of azimuth and elevation angle is made based on the grouped point estimates in the range of neighbouring frequency samples. Interval direction finding is based on the azimuth and elevation estimates formed entirely from the interval of adjacent frequency samples, in which the signal components are found, and the subsequent refinement of frequency sample interval boundaries for each radio source in multisignal mode by spatial selection methods. Point direction finding is mainly implemented in single-signal mode in modern operating broadband radio monitoring complexes, while the multi-signal mode based on MUSIC or ESPRIT is implemented in the time domain in a narrow frequency band.Aim. Development and investigation of methods for point and interval direction finding in multi-signal mode, as well as development of recommendations for their practical application in multi-signal and single-signal modes.Methods. Multi-signal mode for point and interval direction finding was implemented using MUSIC and ESPRIT. An experimental study of the developed direction finding methods in single-signal and multi-signal (on ESPRIT) modes with overlapping signal spectra was carried out by processing the recorded real signals. The records were made using a seven-channel coherent synchronous receiver connected to a seven-element 60° angle antenna array.Results. The research results are presented by frequency-azimuth panoramas and estimates of the amplitude spectra of separated signals and direction finding accuracy indicators.Conclusion. It was experimentally demonstrated that point direction finding should be used in single-signal mode provided the absence of information on the number of signals in the observed data. Interval direction finding is recom-mended in multi-signal mode for improving the accuracy and real-time feasibility of the process.

Analyzing the propagation of EUV waves and their connection with type II radio bursts by combining numerical simulations and multi-instrument observations

Context. EUV (EIT) waves are wavelike disturbances of enhanced extreme ultraviolet (EUV) emission that propagate away from an eruptive active region across the solar disk. Recent years have seen much debate over their nature, with three main interpretations: the fast-mode magneto-hydrodynamic (MHD) wave, the apparent wave (reconfiguration of the magnetic field), and the hybrid wave (combination of the previous two). Aims. By studying the kinematics of EUV waves and their connection with type II radio bursts, we aim to examine the capability of the fast-mode interpretation to explain the observations, and to constrain the source locations of the type II radio burst emission. Methods. We propagate a fast-mode MHD wave numerically using a ray-tracing method and the WKB (Wentzel-Kramers-Brillouin) approximation. The wave is propagated in a static corona output by a global 3D MHD Coronal Model, which provides density, temperature, and Alfvén speed in the undisturbed coronal medium (before the eruption). We then compare the propagation of the computed wave front with the observed wave in EUV images (PROBA2/SWAP, SDO/AIA). Lastly, we use the frequency drift of the type II radio bursts to track the propagating shock wave, compare it with the simulated wave front at the same instant, and identify the wave vectors that best match the plasma density deduced from the radio emission. We apply this methodology for two EUV waves observed during SOL2017-04-03T14:20:00 and SOL2017-09-12T07:25:00. Results. The simulated wave front displays a good qualitative match with the observations for both events. Type II radio burst emission sources are tracked on the wave front all along its propagation. The wave vectors at the ray-path points that are characterized as sources of the type II radio burst emission are quasi-perpendicular to the magnetic field. Conclusions. We show that a simple ray-tracing model of the EUV wave is able to reproduce the observations and to provide insight into the physics of such waves. We provide supporting evidence that they are likely fast-mode MHD waves. We also narrow down the source region of the radio burst emission and show that different parts of the wave front are responsible for the type II radio burst emission at different times of the eruptive event.

In search of radio emission from exoplanets: GMRT observations of the binary system HD 41004

ABSTRACT This paper reports Giant Metrewave Radio Telescope (GMRT) observations of the binary system HD 41004 that are among the deepest images ever obtained at 150 and 400 MHz in the search for radio emission from exoplanets. The HD 41004 binary system consists of a K1 V primary star and an M2 V secondary; both stars are host to a massive planet or brown dwarf. Analogous to planets in our Solar system that emit at radio wavelengths due to their strong magnetic fields, one or both of the planet or brown dwarf in the HD 41004 binary system are also thought to be sources of radio emission. Various models predict HD 41004Bb to have one of the largest expected flux densities at 150 MHz. The observations at 150 MHz cover almost the entire orbital period of HD 41004Bb, and about $20{{\ \rm per\ cent}}$ of the orbit is covered at 400 MHz. We do not detect radio emission, setting 3σ limits of 1.8 mJy at 150 MHz and 0.12 mJy at 400 MHz. We also discuss some of the possible reasons why no radio emission was detected from the HD 41004 binary system.

Спосіб розпізнавання типів трьохкоординатних радіолокаційних станцій оглядового типу засобами повітряної радіотехнічної розвідки

Розглядаються способи розпізнавання типів оглядових радіолокаційних станцій в станціях повітряної радіотехнічної розвідки на основі використання апріорних відомостей про параметри огляду простору радіолокаційних станцій. Розпізнавання базується на аналізі виміряних первинних параметрів зондуючих сигналів, а саме періодичних моментів опромінення станції радіотехнічної розвідки, діапазону робочих частот, тривалості зондуючих імпульсів та ін. Аналізуючи ці параметри, можливо однозначно визначити тип джерела випромінювання. Розглядається теоретичні аспекти алгоритму розпізнавання, що засновано на перекритті густин розподілу параметрів відношення правдоподібності.

Calculation of spatial target coordinates in range-difference passive radars by the Levenberg – Marquardt method

This article studies and analyzes the results of applying numerical iterative methods for solving nonlinear equation systems (Newton, modified Newton's method, gradient descent, sequential iterations, Levenberg – Marquardt), compiled and used to calculate the rectangular spatial coordinates of radio emission sources in range-difference passive radars of various configurations (incorporating from 3 to 4 receiving points). The aim of the research was to determine the optimal number of receiving points and to select the most effective algorithm for coordinate transformations of the vector of observed parameters (a set of range difference estimates from radio emission sources to the corresponding pairs of receiving points) into the vector of measured parameters (rectangular spatial coordinates). The following parameters were used as comparison criteria: passive radar working area (a part of space where the deviation of target coordinate estimates from their true values does not exceed the maximum tolerable values); average error in calculating spatial coordinates in the working area; iterations number of coordinate calculation in the analyzed part of space. Upon completing a comparative analysis of obtained characteristics and dependencies, we concluded that it is optimal to include four receiving points in a range-difference passive radar and use the Levenberg – Marquardt method to calculate the spatial coordinates of radio emission sources.

Methodology of classification and recognition of the radar emission sources based on Bayesian programming

This study considers the Bayesian programming methodology for recognition and classification of radio emission sources. A mathematical model of Bayesian programming proposes forming a family of probability distributions based on known parameters contained in a training sample (database). The correlations between the object classes have been estimated according discussed methodology. The received assessment has been used to separate procedures of recognition and classification of radar emission sources. The simulation of methodology has carried out for four parameters of radar signals (frequency range, pulse width, pulse repetition interval and radar rotation frequency) by used database with 346 classes and 16 types of radar. Based on the existing database of radar emission sources, it is possible to predict the probability of class recognition for the general population of objects, if its distribution is known. This study demonstrates the consistency of the Bayesian programming methodology for object identification in ELINT systems.

Statistical Estimates of the Accuracy of Mono-Pulse Direction Finding of Sources of Radioemission by Dual-Channel Phase Devices

Formulation of the problem in general. The practice of radio monitoring indicates that information should be obtained on a time-to-real scale, with maximum speed and minimum time loss; the accuracy of the estimation of the parameters of the radioemission sources and their bearings should be maximized; the probability of recognizing and classifying sources and objects is no less than a given one. This confirms the existence of a problematic situation, which is caused by the existing contradiction between modern requirements for ensuring high speed, accuracy and reliability in the process of obtaining information, data and information and technical capabilities of modern radio monitoring facilities. Analysis of recent researches and publications. Currently, mono-pulse routing techniques are mainly designed to monitor radar signals where most of the signal parameters are known (example, carrier frequency, duration, period or frequency of pulse repetition, signal spectrum width, frequency deviation, signal to noise ratio). But in the conditions of partial or complete uncertainty of parameters, mono-pulse radar methods lose their efficiency and become unsuitable. Presenting the main material. The statistical estimates of the accuracy of the mono-pulse two-channel phasometric direction finding method, which provides unbiased, efficient and optimal estimates with a given probability and minimal mathematical expectation and variance, are calculated. The gain in the accuracy of direction finding when using two-phase phase direction finders will be determined by the ratio of the mean squared errors of the coarse and precise direction channels and equal to the inverse of the magnitudes of the phasometric bases of both channels. Conclusion. The use of mono-impulse dual-channel phase-finding method and defining the parameters of radioemission sources ensure unbiased, efficient and optimal estimates with a given probability and minimal mathematical expectation and variance. The minimization of the mathematical expectation and variance of the statistical estimates of the parameters of radio sources when using the two-channel phasometric method can be assured by rational choice of the magnitude of the phasometric bases of coarse and accurate channels and depends on the signal-to-noise ratio at the input of the direction finder and the accuracy of the carrier frequency measurement. The perspectives of future researches. One of the directions of further researches can be considered the solution of the problem of development of the combined amplitude-phase method (method) of bearing with synthesis of structural circuits of devices conducting mono-impulse bearing of sources of radio emission of telecommunication networks, which provide optimal estimation of relative radiation analysis evaluation of their quality indicators.

Radio Power from a Direct-collapse Black Hole in CR7

Abstract The leading contenders for the seeds of the first quasars are direct-collapse black holes (DCBHs) formed during catastrophic baryon collapse in atomically cooled halos at z ∼ 20. The discovery of the Lyα emitter CR7 at z = 6.6 was initially held to be the first detection of a DCBH, although this interpretation has since been challenged on the grounds of Spitzer IRAC and Very Large Telescope X-Shooter data. Here we determine if radio flux from a DCBH in CR7 could be detected and discriminated from competing sources of radio emission in the halo such as young supernovae and H ii regions. We find that a DCBH would emit a flux of 10–200 nJy at 1.0 GHz, far greater than the sub-nJy signal expected for young supernovae but on par with continuum emission from star-forming regions. However, radio emission from a DCBH in CR7 could be distinguished from free–free emission from H ii regions by its spectral evolution with frequency and could be detected by the Square Kilometre Array in the coming decade.

VLA and ALMA observations of the lensed radio-quiet quasar SDSS J0924+0219: a molecular structure in a 3 μJy radio source

ABSTRACT We present Karl G. Jansky Very Large Array (VLA) and Atacama Large Millimetre Array (ALMA) observations of SDSS J0924+0219, a z = 1.524 radio-quiet lensed quasar with an intrinsic radio flux density of about 3 $\, \mu$Jy. The four lensed images are clearly detected in the radio continuum and the CO(5–4) line, whose centroid is at z = 1.5254 ± 0.0001, with a marginal detection in the submillimetre continuum. The molecular gas displays ordered motion, in a structure approximately 1–2.5 kpc in physical extent, with typical velocities of 50–100 km s−1. Our results are consistent with the radio emission being emitted from the same region, but not with a point source of radio emission. SDSS J0924+0219 shows an extreme anomaly in the flux ratios of the two merging images in the optical continuum and broad emission lines, suggesting the influence of microlensing by stars in the lensing galaxy. We find the flux ratio in the radio, submillimetre continuum and CO lines to be slightly greater than 1 but much less than that in the optical, which can be reproduced with a smooth galaxy mass model and an extended source. Our results, supported by a microlensing simulation, suggest that the most likely explanation for the optical flux anomaly is indeed microlensing.

Origin of quasi-harmonic emission bands with fine structure in the dynamic spectra of high-frequency interpulses of the Crab pulsar

ABSTRACT We study the origin of quasi-harmonic emission bands with fine structure observed in the dynamic radiation spectra of high-frequency interpulses. The possible explanation of observed structure is based on the effect of double plasma resonance (DPR) at electron cyclotron harmonics realized in the magnetosphere of pulsar in a local radio emission source filled with non-relativistic plasma. The model of the source consists of neutral current sheet with a transverse magnetic field where plasma waves are generated due to DPR effect. It is shown that the emergence of emission bands and their frequency spacing are due to the inhomogeneity of the plasma and magnetic field along the current sheet, and their fine structure is due to the inhomogeneity of the current sheet in the direction orthogonal to it. Each quasi-harmonic emission band represents a system of elements of fine features of radiation that is generated by suprathermal electrons under DPR conditions. The observed upward drift of quasi-harmonic emission bands is due to the displacement of suprathermal electrons across the current sheet and an increase in the DPR frequencies with distance from the central plane of the layer.

Investigation of method of elimination of interference situation effect on GPS navigation receiver operation by smoothing of pseudorange measurements by pseudophase increment

The wide application of high-precision GNSS (global navigation satellite system) positioning technologies for unmanned mobile object management requires the acquisition of solutions with subdecimeter accuracy and the reduction of the convergence period to such accuracy from the beginning of measurements to 20–25 minutes. Unfortunately, the accuracy of the obtained navigation solutions and the time of convergence to high-precision solutions are influenced by re-reflection of GNSS signals from the ground, buildings and structures, as well as interference from different sources of radio emissions of the urban environment. Therefore, it is an urgent task to implement methods of eliminating the influence of the interference situation on the operation of the navigation receiver of GNSS signals and investigating their effectiveness. The paper considers the results of investigation of the method of elimination of interference situation effect on GPS signal navigation receiver operation using smoothing of raw pseudorange measurements by pseudophase increment. Justification of the difference of measurement of pseudo-range by carrier phase and pseudo-range by code is given as a criterion of efficiency of estimation of interference situation influence in the area of navigation signals reception. As a result of the analysis of experimental studies, it has been shown that using the described method, starting from 900 seconds, the values of the smoothed parameter do not deviate from the averaged measurements over a long time interval by more than 0.1 meters, which indicates the efficiency of the method of smoothing by phase increments and is potentially promising for highly accurate measurements.