Abstract
Complex motions such a micro-motions induce complex range-Doppler coupling effect in radar imaging. Hence it is a challenge to reconstruct a clear range profile of a target with micro-motion. Stretch processing with fine motion compensation cannot perform well while it tics to eliminate the distortion of range profile caused by Doppler effect, because it is difficult to accurately estimate each scattering center velocity during coherent processing interval. Based on nonuniform stretch processing (NSP), a new technology is proposed to decouple range, time and Doppler and then achieve range profile of target with micro-motion. The new technology uses a new synthetic wide-band waveform and has an innovative mathematic interpretation. Statistical properties of the new approach are primarily examined. Typical models of target with micro-motion for high resolution rader are presented. Monte Carlo simulations demonstrate the performance of the new technology and the simulation result confirm our expectations.
* Supported by National Natural Science Foundation of China (Grant No. 60402032)
Notes
* Supported by National Natural Science Foundation of China (Grant No. 60402032)