Frequency hopping signal target detection and parameter estimation method and device
A technology of parameter estimation and target detection, applied in the field of signal processing, can solve the problem of inaccurate target detection of frequency hopping signals, and achieve the effect of improving positioning accuracy, target detection probability, accurate recognition rate, and low signal-to-noise ratio.
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[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0033] Such as figure 1 As shown, the present invention comprises: 1) carry out two-way collection to detection signal, obtain two-way frequency-hopping pulse signal; 2) regard one-way signal as reference signal, realize the pulse compression of second-way signal; 3) by means of generalized Radon 4) Use the parameter estimation results to compensate the phase; 5) Use FFT to realize the accumulation of the target in the fast time and slow time dimensions.
[0034] 1) Two-way acquisition of the detection signal to obtain the frequency-hopping pulse signal r 1 (t,n) and r 2 (t,t m ,n), where:
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[0039] In the formula, A 1 and A 2 Indicates the signal amplitude of each channel; t indicates the fast time, t m Represents the slow time, c represents the wave velocity (electromagnetic wave propagation speed), n re...
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