| 一种多波形雷达信号全数字产生及处理系统 |
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| 引用本文： | 刘晟,向敬成,陈辅新. 一种多波形雷达信号全数字产生及处理系统[J]. 电子科技大学学报(社会科学版), 1995, 0(Z2) |
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| 作者姓名： | 刘晟 向敬成 陈辅新 |
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| 作者单位： | 电子科技大学电子工程系 |
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| 摘 要： | 提出并实现了兼容多种雷达脉压信号的全数字产生及处理系统。其信号包括线性调频信号、非线性调频信号及其多相码、泰勒（Ｔａｙｌｏｒ）四相码信号等。利用级联型ＦＩＲ滤波器ＩＭＳＡ１００组成数字复相关脉压网络对多种带宽（带发达５ＭＨｚ）脉压信号进行实时数字处理；分析了数字方法运用于波形合成中由于ＤＡＣ零阶保持特性造成的信号频谱高频失真的机理；采用提高ＤＡＣ转换速率以获得近似理想冲激串取样的方法，产生了多种性能稳定、波形质量高的宽带雷达脉压信号。文中给出了部分模拟与实验结果。
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| 关 键 词： | 雷达信号；脉冲压缩；非线性调频；泰勤四相码；数字波形产生；数字复相关 |
AGeneration and Processing System for Arbitrary Signals for Pulse Compression Radars |
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| Liu Sheng, Xiang Jinchen, Chen Fuxin. AGeneration and Processing System for Arbitrary Signals for Pulse Compression Radars[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 1995, 0(Z2) |
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| Authors: | Liu Sheng Xiang Jinchen Chen Fuxin |
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| Abstract: | A generation and processing system for abitrary signals in pulse compres radars,involving linear frequency modulation( LFM),nonilnear frequency modulation(NLFM)and NLFMpolyphase codes and Taylor quardraphase codes,is put forword and realized. A digital complex correlaticonnetwork configured with FIR VLSI IMSA100S is designed and it can complete wideband(up to 5 MHz)pulse compression signal procession signal processing realtime. The mechanism of the signal spectrum distortion because of DAC's zero-order holding is analysed.By high DAC'update rate high-quality wideband sig nals for pulsecompression radars are generated. Some simulation and experiment results are provided. |
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| Keywords: | radar signal pulse compression nonlinear frequency modulation Taylor quardraphase code digital waveform generation digital complex correlation |
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