Radar Target Discrimination and Identification Using Extinction-Pulses and Single-Mode Extraction Signals

摘要

The purpose of this research is to develop a new scheme of radar discrimination and identification. The new scheme is based on the natural frequencies of the target. It consists of synthesizing aspect-independent discriminant signals, called Extinction-pulses (E-pulses) and single-mode extraction signals which, when convolved numerically with the late-time transient response of an expected target, lead to zero or single-mode responses. When the synthesized, discriminant signals for an expected target are convolved with the radar return from a different target, the resulting signal will be significantly different from the expected zero or single-mode responses, thus, the differing targets can be discriminated. The basic principle of our scheme based on aspect-independent, E-pulses and single-mode extraction signals is described based on the time-domain and frequency-domain analysis. The noise-insensitivity of our scheme is also reported. Extraction of the natural frequencies of a radar target from a measured response using E-pulse technique, and determination of the impulse response of a complex target through a deconvolution method are also presented.