Target detection and parameter estimation method and system

The invention provides a target detection and parameter estimation method and system. The method comprises the following steps: acquiring inter-pulse frequency and repetition frequency simultaneous hopping radar original baseband echo signal data; carrying out one-dimensional Fourier transform on the baseband echo data along a distance dimension to a distance frequency domain, and obtaining an echo signal after pulse compression; filtering the echo signal, and compensating the phase influence related to the target slope distance in the echo signal; reconstructing a signal based on generalized KT transformation, and converting a phase term with repeated frequency hopping in the echo signal into a traditional signal phase form; carrying out distance IFFT and azimuth FFT processing on the transformed signal, and transforming the transformed signal to a distance time domain-Doppler frequency domain two-dimensional signal focusing plane; and performing moving target detection on the distance time domain-Doppler do