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前言研究出一种大时间带宽的信号波形,从而在满足高距离和速度分辨力以及抑制杂波要求的同时又能无模糊地测距和测速,是雷达设计者们多年来面对的一个难题。一般说,想靠一组固定的雷达参数同时满足所有要求是不可能的。虽然信号处理技术和VLSI、VHSIC等方面取得的进展,目前使许多并行的高速功能有可能在机载设备允许的体积内完成,但问题依然存在:理论上,尚未找到能满足所有要求的具有理想特性的信号波形。本文首先介绍一下常规的高PRF和低PRF方法;然后对中PRF脉冲多卜勒(多重距离门和多卜勒滤波器)波形进行了研究,后者看来是空-空雷达的一种最优选择。
The preamble has developed a signal waveform of large time bandwidth, which can meet the requirements of radar designers over the years for meeting the requirements of high range and speed resolution, suppressing the clutter requirements, and at the same time measuring and tracking without ambiguity . In general, it is not possible to satisfy all the requirements by a fixed set of radar parameters simultaneously. While progress has been made in signal processing techniques and in VLSI, VHSIC and many other parallel high-speed functions that are currently possible within the volume allowed by airborne equipment, the problem persists: in theory, no ideal has been found to meet all the requirements Characteristics of the signal waveform. This paper first introduces the conventional high PRF and low PRF methods; then studies the waveform of the mid-PRF pulsed Doppler (multiple range gate and Doppler filter), which appears to be one of the most air-space radar Excellent choice.