Long frequency band radar target jogging feature estimation method
A radar target and low-frequency band technology, applied in the radar field, can solve the problems of long radar wavelength, large amount of calculation, and inability to process micro-Doppler signals of the target
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[0034] The present invention will be further described below in conjunction with the accompanying drawings.
[0035] figure 1 It is a flowchart of a method for estimating micro-motion characteristics of a low-frequency radar target for common narrowband pulse Doppler radars in the present invention. The input of the method is the target narrow-band echo x(t) obtained by the low-frequency radar, the signal x(k) is obtained after performing N-point discrete sampling on x(t), and then undergoes complex logarithmic operation, and then through phase defuzzification and spectrum estimation to obtain Y(m), and finally calculate the target micro-motion spectrum Z(m). The output of the method is the micro-motion characteristics of the target. Wherein, the number of discrete sampling points and sampling rate are determined according to specific problems, and the higher the number of points and sampling rate is, the more accurate the target micro-motion spectrum obtained by the present ...
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