摘要
当前,非相参雷达得到了广泛的应用,其通常的动目标处理方法是用相干振荡器(COHO)记忆每个发射脉冲起始相位来实现。本文介绍的是用数字存贮发射样本的方法实现动目标处理。此方法亦称数字相关分析法。由于此方法不仅能补偿发射脉冲起始相位不稳定性,还能补偿发射系统中存在的其它不稳定因素,如脉冲频率不稳、幅度不稳等。因此,应用此方法的雷达能获得较好的动目标处理能力。 文中除介绍实现动目标处理的原理和方法外,着重介绍数字相关器的功能及其能达到的性能。文中将讨论数字相关器的基本关系式;用自卷积方法实现鉴频功能;幅度补偿原理和由于相位检波器正交误差而引起对改善因子限制等问题。本系统原理已得到证明。
A new method using digital correlation analysis for noncoherent moving target processing is introduced, as compared to the conventional one which uses a coherent local oscillator. The digital correlator is used to store transmitting pulse samples and then corrte them with receiving pulse echos. The principle of the coherence-on-receive method is fully distrised in this paper, and several factors affecting its performances are considered. Finally, an implementing structure of the digital correlator is given.
出处
《系统工程与电子技术》
EI
CSCD
1989年第9期43-49,共7页
Systems Engineering and Electronics
关键词
雷达
动目标处理
数字相关分析
Radar, Radar signal processing, Moving target, Digital signal, Correlation technique, Correlator.
