一種基于誤差能量判別的單脈沖雷達測速功能優化方法
2020年電子技術應用第5期
程望東
南京電子技術研究所,江蘇 南京210039
摘要: 對單脈沖雷達測速系統的原理進行了描述,并針對回波信號的相位發生跳變致使頻譜展寬,出現跟錯譜線,導致測速出錯的問題,提出了基于鑒頻器輸出信號能量判別的準則。通過對鑒頻器輸出信號進行判別,當回波信號的相位發生持續跳變時,鑒頻器輸出振蕩,積分器輸出就會超過門限,測速系統重新消模糊;當回波信號的相位穩定后,測速結果可以回到正確的結果上,從而可以修正跳譜線導致的測速誤差。
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,而徑向速度參數的測量結果對目標定軌具有重要意義。相比較連續波測速系統,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跳變,也容易造成測速結果跳譜線。如何及時判別跳譜線現象,并及時糾正錯誤,保證測速結果連續有效,就成了單脈沖測量雷達測速系統的關鍵[1-4]。
論文詳細內容請下載http://www.j7575.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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