Radar high maneuvering target phase-coherent accumulation detection method based on time-reversed non-uniform sampling
A non-uniform sampling and high maneuvering target technology, applied in the direction of radio wave measurement systems, instruments, etc., can solve the problems of poor estimation accuracy of motion parameters, limited cumulative gain, and difficult engineering applications, so as to reduce the influence of cross items and parameter estimation High precision, achieve the effect of rapid order reduction
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings. With reference to the accompanying drawings of the description, the processing flow of the present invention is divided into the following steps:
[0024] 1) Radar echo pulse compression to obtain fast time-slow time two-dimensional data
[0025] Assuming that the radar transmits a chirp signal, the received baseband echo signal is expressed as
[0026]
[0027] In the formula, t is fast time, representing the distance information, t m is the slow time between pulses, s r (t,t m ) is the baseband echo signal, A r is the echo amplitude, K is the FM slope of the transmitted chirp signal, T p is the pulse length, R s (t m ) is the radial distance between the radar and the target, c 0 Represents the speed of light, 2R s (t m ) / c is the echo delay, λ is the signal wavelength, the range pulse compression is performed on formula (1), and the radar echo tw...
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