Abstract
The article considers the option of organizing joint processing of radar information in a multistatic rangefinder - doppler radar system. The least-squares method is used to obtain analytical expressions for oblique ranges and radial velocities of targets during joint processing of range-finding measurements of various types. The obtained expressions for inclined ranges have some similarities with the secondary processing of radar information, with the only difference being that the weighting coefficients for the evaluated parameters are updated in the case of successive measurements as data are received, and in the case of joint processing, they depend on the number of positions and the number of measurements. It is shown that the joint processing of measurements of the inclined range, the sum of the distances, the radial velocity and the rate of change of the total range allows to increase the accuracy of measuring the location of an air object and the projections of its velocity vector on the axis of a rectangular coordinate system. The physical basis for increasing the accuracy of positioning is to use redundant measurements by processing the total ranges. The considered option of processing redundant measurements in a multistatic radar system does not require time to accumulate data, and the task of increasing accuracy is solved in one measurement cycle. The potential accuracy of determining the location of an air object for different values of the standard errors of the determination of rangefinding parameters in a multistatic radar system at various distances between positions has been calculated. For an arbitrary trajectory of an air object, simulation-statistical modeling was performed, which allows to obtain the mean square errors of determining the location and velocity vector of the air object. A gain is shown in the accuracy of determining the location and velocity vector of an air object in comparison with traditional algorithms for determining coordinates in long-range multistatic radar systems.
Highlights
The topic of the coordinate measurement in the multistatic radar system (MRS) is covered in the remarkable amount of the Russian and foreign academic works
The works [1, 2] show that cooperative radar information processing in the MRS is the most valuable one as it allows to derive the potentially larger information content from the current awareness
The principal feature of the data redundancy in MRS is that the considerable amount of time for data accumulation is not required, and the problem of increasing the accuracy is handled for the single measurement cycle
Summary
The topic of the coordinate measurement in the multistatic radar system (MRS) is covered in the remarkable amount of the Russian and foreign academic works. The works [1, 2] show that cooperative radar information processing in the MRS is the most valuable one as it allows to derive the potentially larger information content from the current awareness The feature of such a data proceeding approach is that all the positions are able to receive the fended signals in the area of responsibility while being irradiated by any relaying position. Let us write the scalar algebraic coupled equations, according to the considered range measurements
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