Advanced SAR Mode Image Formation Using Pulse Z-Transform

Inhalt:
A new phase preserving SAR processor that solves the range dependent range cell migration problem is presented and verified both theoretically and experimentally, with simulations and with real data in this paper. The operations involved are only Fourier transforms, multiplications and sums. The processor achieves O(M*log2(M) *N*log2(N)) floating point operations where M and N are unconstrained numbers of data samples in azimuth and range. The SAR processor works for squint mode as well as broadside SAR operation. The method generalizes the classical Range Doppler Algorithm.