一种基于误差能量判别的单脉冲雷达测速功能优化方法
2020年电子技术应用第5期
程望东
南京电子技术研究所,江苏 南京210039
摘要: 对单脉冲雷达测速系统的原理进行了描述,并针对回波信号的相位发生跳变致使频谱展宽,出现跟错谱线,导致测速出错的问题,提出了基于鉴频器输出信号能量判别的准则。通过对鉴频器输出信号进行判别,当回波信号的相位发生持续跳变时,鉴频器输出振荡,积分器输出就会超过门限,测速系统重新消模糊;当回波信号的相位稳定后,测速结果可以回到正确的结果上,从而可以修正跳谱线导致的测速误差。
中圖分類號: TN953+.1
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.191261
中文引用格式: 程望東. 一種基于誤差能量判別的單脈沖雷達測速功能優(yōu)化方法[J].電子技術應用,2020,46(5):50-52,58.
英文引用格式: Cheng Wangdong. Monopulse radar velocity measurement function optimization method based on error energy discrimination[J]. Application of Electronic Technique,2020,46(5):50-52,58.
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.191261
中文引用格式: 程望東. 一種基于誤差能量判別的單脈沖雷達測速功能優(yōu)化方法[J].電子技術應用,2020,46(5):50-52,58.
英文引用格式: Cheng Wangdong. Monopulse radar velocity measurement function optimization method based on error energy discrimination[J]. Application of Electronic Technique,2020,46(5):50-52,58.
Monopulse radar velocity measurement function optimization method based on error energy discrimination
Cheng Wangdong
Nanjing Research Institute of Electronics Technology,Nanjing 210039,China
Abstract: In this paper, the principle of monopulse radar velocimeter system is described, and the criterion of energy discrimination based on frequency discriminator output signal is put forward because of the phase jump of echo signal, which leads to the broadening of spectrum, the occurrence of error line and the error of velocity measurement. By discriminating the output signal of the frequency discriminator, when the phase of the echo signal continues to jump, the output of the discriminator oscillates, the output of the integrator will exceed the threshold, and the speed measuring system will eliminate blurring again. When the phase of the echo signal is stable, the speed-measuring result can be returned to the correct result, so that the speed-measuring error caused by the jump line can be corrected.
Key words : monopulse radar;velocity measurement;I/Q signal;ambiguity
0 引言
單脈沖測量雷達可以精確測量飛行目標的方位角、俯仰角、徑向距離、徑向速度等參數(shù),而徑向速度參數(shù)的測量結果對目標定軌具有重要意義。相比較連續(xù)波測速系統(tǒng),單脈沖測量雷達的測速結果是有模糊的,因此對測速結果解模糊就是單脈沖測量雷達測速系統(tǒng)的關鍵。而在單脈沖測量雷達對導彈、火箭等目標進行非合作測量時,由于存在級間分離、拋灑物體等事件,非常容易造成測速結果跳譜線,同樣在對目標進行合作測量時,如果應答機信號出現(xiàn)跳變,也容易造成測速結果跳譜線。如何及時判別跳譜線現(xiàn)象,并及時糾正錯誤,保證測速結果連續(xù)有效,就成了單脈沖測量雷達測速系統(tǒng)的關鍵[1-4]。
論文詳細內(nèi)容請下載http://m.ihrv.cn/resource/share/2000002790
作者信息:
程望東
(南京電子技術研究所,江蘇 南京210039)
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