Pulse compression waveforms for use in high-resolution signature formation

Abstract

Pulse compression waveforms and processing techniques for high-resolution signature formation are typically constrained by hardware limitations and target motion. This paper serves as a summary comparison of three modern pulse compression techniques: 1) linear frequency modulation (matched filtering), 2) stretch processing, and 3) stepped frequency waveforms, that are designed to perform under different hardware limitations. However, tradeoffs exists between the three techniques which limit range window sizes, result in range aliasing, define minimum sampling rates and instantaneous bandwidths, and define range-Doppler ambiguities and distortions. This paper focuses on the mathematical development of the three techniques and relates the results to hardware requirements and range-Doppler ambiguities/distortions.

Low sidelobe nonlinear stepped-frequency waveforms

“…. , N 2 − 1) is a replica of u (0) (t) shifted in both time and frequency (by kN 1 t r and f (2) k , respectively). This assumption is schematically illustrated in the top subplot of Fig.…”

Reception and calibration of bistatic SF ISAR imaging system with wideband receiver

“…The method is proved to be effective by theoretical analysis and simulations. After the pre‐processing, the subsequent processing procedures for generating ISAR images are the same with the conventional SF ISAR imaging system which receives echo signals with SF receiver [11–14].…”