High-speed target detection method based on P/D band radar signal fusion processing

Abstract

The invention discloses a high-speed target detection method based on P/D band radar signal fusion processing. The method comprises the following steps: a transmitted waveform of a P-band working radar is selected as a pseudo-random binary phase shift keying pulse signal and a transmitted waveform of a D-band working radar is selected as a linear frequency modulated continuous wave signal; transmitted waveform parameters of the pseudo-random binary phase shift keying pulse of the P-band radar and the linear frequency modulated continuous wave of the D-band radar are determined; the corresponding working waveforms of the P-band and D-band are transmitted and received cooperatively; echoes of the transmitted signals of the P-band and D-band radars are processed; and the signal processing results of the two waveforms are fused to obtain the distance and velocity information of a target. According to the invention, the problem that velocity detection ambiguity of the high-speed target is likely to occur under the D-band radar is solved; and the accuracy of target ranging and velocity detection is improved.

Description

technical field [0001] The invention belongs to the technical field of radar information, in particular to a high-speed target detection method based on P / D band radar signal fusion processing. Background technique [0002] In recent years, the rapid development of stealth technology has posed severe challenges to strategic and tactical defense systems, forcing people to consider how to destroy stealth weapons and study anti-stealth technology. The frequency band with the best effect of active stealth aircraft is between 1 and 40 GHz. If the radar operating frequency exceeds this range, the radar detection capability can be significantly improved, thereby greatly reducing the stealth ability of stealth aircraft. [0003] The P-band frequency range is 0.23-1GHz, and the D-band frequency range is 110-170GHz. Both of them are outside the stealth frequency band, so both P-band and D-band radars have excellent anti-stealth capabilities. P-band adopts binary phase shift keying (B...

AI Technical Summary

Problems solved by technology

P-band adopts binary phase shift keying (Binary Phase Shift Keying, BPSK) working waveform, D-band adopts linear frequency modulated continuous wave (Linear Frequency Modulated Continuous Wave, LFMCW) working waveform, both of which have high ranging accuracy, but in In terms of speed measurement performance, the P-band radar transmits a signal with a large wavelength, so there is a problem of poor speed measurement accuracy

D-band LFMCW radar has high speed measurement accuracy, but its working waveform has a small wavelength, which is easy to cause speed measurement ambiguity caused by Doppler ambiguity

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