| 用于探测飞机的多普勒预处理相位编码信号 |
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| 引用本文： | 沈一鹰,刘永坦.用于探测飞机的多普勒预处理相位编码信号[J].系统工程与电子技术,2000,22(1):39. |
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| 作者姓名： | 沈一鹰 刘永坦 |
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| 作者单位： | 哈尔滨工业大学电子工程技术研究所,150001 |
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| 摘 要： | 采用调频断续波（ＦＭＩＣＷ）或频率编码脉冲（ＦＣＰ）来探测飞机目标。飞机的高速运动所产生距离－多普勒耦合效应使信号波形参数难以选择。应用相参频率编码脉冲串信号（ＣＰＣＰＴ）较好地解决了距离－多普勒耦合问题。而相应的信号处理由三部分组成：多普勒预处理、脉冲压缩和多普勒后处理。由预处理获得的速度信息被用来提高脉冲压缩质量和距离跟踪。通过距离跟踪实现的多普勒后处理则能以较长相参积累获得较好的探测和速度分辨能力。上述成果均以数据仿真实例做了验证
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| 关 键 词： | 信号处理 脉冲压缩 模拟 相参频率编码脉冲串 |
| 修稿时间： | 1998-11-06 |
Phase-Coded Pulse Train with Doppler Preprocessing for Detection of Aircraft |
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| Shen Yiying,Liu Yongtan.Phase-Coded Pulse Train with Doppler Preprocessing for Detection of Aircraft[J].System Engineering and Electronics,2000,22(1):39. |
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| Authors: | Shen Yiying Liu Yongtan |
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| Abstract: | The effectofrange-Dopplercoupling caused by aircraftm oving atvery high speed m akes trouble on the selection of waveform param eters by using frequency-m odulated interrupted continuous wave(FMICW) or frequency-coded pulse (FCP). Italso lim itsthe increasing ofcoherentintegration tim e. In this paper, theapplication of coherent phase-coded pulse train(CPCPT) solves range-Doppler coupling w ell. Relevant processing of CPCPT consists of three parts: Doppler preprocessing, pulse com pression, and Doppler post-processing. The velocity inform ation obtained by Dopplerpreprocessing isused forbetterpulse com pression and rangetracking. Dopplerpost- processing with range tracking could m ake longer coherent accum ulation for better detection of target and higher velocity resolution. Finally, exam plesofdatasim ulation are given to dem onstrate the achievem entsm entioned above. |
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| Keywords: | Signalprolessing Pulse com pression Sim ulation CPCPT |
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