宽带线性调频雷达目标角度估计方法研究
Study on Monopulse Angle Estimation for Wideband Linear Frequency Modulation Radars
Abstract
现代雷达系统中，宽带雷达具有抗杂波能力强、参数估计精度高等特点，为目前广泛采用的雷达体制，线性调频信号是目前宽带雷达的主要波形。由于距离分辨率与雷达信号的带宽成反比，宽带线性调频雷达凭借其大带宽的优势能够利用目标的雷达回波形成高分辨率距离像，所以宽带线性调频雷达在现代雷达系统中体现出越来越大的重要性，然而基于宽带线性调频雷达的单脉冲角度估计方法却少有提及。因此，本文围绕宽带线性调频雷达目标角度估计问题，开展了以下几个方面的研究工作： (1)深入研究宽带线性调频信号的回波信号模型，对实际雷达信号处理过程中下变频、采样、滤波和去斜等过程进行了模拟，最终得到高仿真度的宽带线性调频回波信号的离散形式... In modern radar systems, wideband radars are widely used with advantages such as strong anti-jamming capability and high accuracy of parameter estimation, and the linear frequency modulated (LFM) pulses are the main waveforms of the current wideband radars. Since range resolution is normally inversely proportional to the bandwidth of the transmitted pulses, wideband LFM radars can form the high re...