High-speed maneuvering target parameter estimation method based on frequency domain polynomial phase transformation

The invention discloses a high-speed maneuvering target parameter estimation method based on frequency domain polynomial phase transformation. On the basis of data received by a space-based radar, pulse compression processing is carried out on high-speed maneuvering target echo data, fast Fourier transform is carried out along a quick time direction of the data after the pulse compression processing to obtain range frequency domain-slow time data, delaying is carried out on the range frequency domain-slow time data, conjugation of the range frequency domain-slow time data through delaying and the range frequency domain-slow time data without delaying are multiplied to realize frequency domain polynomial phase transformation, inverse fast Fourier transform is carried out along a range frequency domain direction of the data after frequency domain polynomial phase transformation processing, fast Fourier transform is carried out along the slow time direction on the basis to obtain range cell-Dopple data, and finally the range cell-Dopple data are used for target parameter estimation. In the condition of a low signal-to-noise ratio and a limited accumulated pulse number, a high-precision target parameter estimation result is acquired.