Abstract
This paper focuses on the problems encountered in the actual data processing with the use of the existing aerial target localization methods, analyzes the causes of the problems, and proposes an improved algorithm. Through the processing of the sea experiment data, it is found that the existing algorithms have higher requirements for the accuracy of the angle estimation. The improved algorithm reduces the requirements of the angle estimation accuracy and obtains the robust estimation results. The closest distance matching estimation algorithm and the horizontal distance estimation compensation algorithm are proposed. The smoothing effect of the data after being post-processed by using the forward and backward two-direction double-filtering method has been improved, thus the initial stage data can be filtered, so that the filtering results retain more useful information. In this paper, the aerial target height measurement methods are studied, the estimation results of the aerial target are given, so as to realize the three-dimensional localization of the aerial target and increase the understanding of the underwater platform to the aerial target, so that the underwater platform has better mobility and concealment.
Highlights
Underwater platforms have good concealment and mobility, have a greater self-sufficiency, endurance and combat radius, and can attack sea and land targets, and play an important role in national naval equipment
We mainly study the field excited by the aerial target at the vector field level, and use the signals collected by a three-dimensional vector sensor to estimate the azimuth, frequency, heading angle, velocity, closest distance, horizontal distance, elevation and height
Parameter Estimation Results in the Horizontal Direction least squares fitting of the three-band frequency sequences, we can get that the source frequency
Summary
Underwater platforms have good concealment and mobility, have a greater self-sufficiency, endurance and combat radius, and can attack sea and land targets, and play an important role in national naval equipment. Schmidt [12] gave the field under the combined motion of the source and the receiver in the ocean waveguide environment with the use of the spectrum theory This method is mainly applicable to long-distance Doppler pulse signal calculations. Based on the Doppler characteristics of the aerial target radiated noise received by the underwater sensors, we can estimate the parameters of the aerial target. This method has high concealment and safety performance, and has no effect on the underwater platform’s mobility. We mainly study the field excited by the aerial target at the vector field level, and use the signals collected by a three-dimensional vector sensor to estimate the azimuth, frequency, heading angle, velocity, closest distance, horizontal distance, elevation and height.
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