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Monopulse radar based on spatiotemporal correlation of stochastic signals.

机译:基于随机信号时空相关的单脉冲雷达。

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摘要

Random noise radar has been applied successfully to range measurement, velocity estimation, and terrain/target imaging. Based on the previous work, this dissertation develops a new approach towards the signal propagation, signal processing, and system architectures for wideband, multifunction random noise monopulse.; A harmonic analysis method is introduced to describe or control the behavior of individual frequency component of propagating random fields. Using this method, theoretical analysis and system simulations are conducted for the two basic architectures: the correlation receiver and the phase-comparison monopulse angle-of-arrival (AOA) estimator.; For the first time, this dissertation studies the real-time performance, output frequency component statistics, and system design tradeoffs based upon wideband or ultra-wideband (UWB) stochastic signal waveforms. The concept of mean monopulse characteristic curve (MMCC) is introduced. A unified UWB radar system architecture, called coherent correlation receiver (CCR), is proposed. The architecture integrates array processing, correlation receiver, and traditional coherent architecture to demodulate both phase and amplitude information in the analog domain.; As a specific example, a new experimental tracking radar system based on this architecture is described. This radar was built primarily for detection and tracking slow-moving targets and estimation of AOA using a wide-band random noise signal.; For the phase-comparison monopulse, it is shown that the system has equivalent monopulse characteristic curve to a continuous wave (CW) single frequency monopulse radar system in the sense of statistical average. We show that the rich frequency content of the stochastic signal brings about important advantages, and the correlation receiver architecture enables continuous ambiguity-free range tracking. Experimental results supporting the theoretical and simulation analysis are presented and discussed.
机译:随机噪声雷达已成功应用于范围测量,速度估计和地形/目标成像。在此基础上,本文针对宽带多功能随机噪声单脉冲信号的传输,信号处理和系统架构提出了新的思路。引入谐波分析方法来描述或控制传播随机场的各个频率分量的行为。使用这种方法,对两种基本架构进行了理论分析和系统仿真:相关接收机和相位比较单脉冲到达角(AOA)估计器。本文首次研究了基于宽带或超宽带(UWB)随机信号波形的实时性能,输出频率分量统计和系统设计折衷。介绍了平均单脉冲特性曲线(MMCC)的概念。提出了一种统一的UWB雷达系统架构,称为相干相关接收机(CCR)。该体系结构集成了阵列处理,相关接收器和传统的相干体系结构,以在模拟域中解调相位和幅度信息。作为一个具体的例子,描述了一种基于该架构的新型实验跟踪雷达系统。该雷达主要用于检测和跟踪缓慢移动的目标以及使用宽带随机噪声信号估算AOA。对于相位比较单脉冲,从统计平均值的角度表明,该系统具有与连续波(CW)单频单脉冲雷达系统等效的单脉冲特性曲线。我们表明,随机信号的丰富频率内容带来了重要的优势,并且相关接收器体系结构实现了连续无歧义的范围跟踪。提出并讨论了支持理论和仿真分析的实验结果。

著录项

  • 作者

    Zhang, Yan.;

  • 作者单位

    The University of Nebraska - Lincoln.;

  • 授予单位 The University of Nebraska - Lincoln.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 158 p.
  • 总页数 158
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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