一種基于誤差能量判別的單脈沖雷達(dá)測(cè)速功能優(yōu)化方法
2020年電子技術(shù)應(yīng)用第5期
程望東
南京電子技術(shù)研究所,江蘇 南京210039
摘要: 對(duì)單脈沖雷達(dá)測(cè)速系統(tǒng)的原理進(jìn)行了描述,并針對(duì)回波信號(hào)的相位發(fā)生跳變致使頻譜展寬,出現(xiàn)跟錯(cuò)譜線,導(dǎo)致測(cè)速出錯(cuò)的問題,提出了基于鑒頻器輸出信號(hào)能量判別的準(zhǔn)則。通過對(duì)鑒頻器輸出信號(hào)進(jìn)行判別,當(dāng)回波信號(hào)的相位發(fā)生持續(xù)跳變時(shí),鑒頻器輸出振蕩,積分器輸出就會(huì)超過門限,測(cè)速系統(tǒng)重新消模糊;當(dāng)回波信號(hào)的相位穩(wěn)定后,測(cè)速結(jié)果可以回到正確的結(jié)果上,從而可以修正跳譜線導(dǎo)致的測(cè)速誤差。
中圖分類號(hào): TN953+.1
文獻(xiàn)標(biāo)識(shí)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(dá)測(cè)速功能優(yōu)化方法[J].電子技術(shù)應(yīng)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(xiàn)標(biāo)識(shí)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(dá)測(cè)速功能優(yōu)化方法[J].電子技術(shù)應(yīng)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(cè)量雷達(dá)可以精確測(cè)量飛行目標(biāo)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(cè)量結(jié)果對(duì)目標(biāo)定軌具有重要意義。相比較連續(xù)波測(cè)速系統(tǒng),單脈沖測(cè)量雷達(dá)的測(cè)速結(jié)果是有模糊的,因此對(duì)測(cè)速結(jié)果解模糊就是單脈沖測(cè)量雷達(dá)測(cè)速系統(tǒng)的關(guān)鍵。而在單脈沖測(cè)量雷達(dá)對(duì)導(dǎo)彈、火箭等目標(biāo)進(jìn)行非合作測(cè)量時(shí),由于存在級(jí)間分離、拋灑物體等事件,非常容易造成測(cè)速結(jié)果跳譜線,同樣在對(duì)目標(biāo)進(jìn)行合作測(cè)量時(shí),如果應(yīng)答機(jī)信號(hào)出現(xiàn)跳變,也容易造成測(cè)速結(jié)果跳譜線。如何及時(shí)判別跳譜線現(xiàn)象,并及時(shí)糾正錯(cuò)誤,保證測(cè)速結(jié)果連續(xù)有效,就成了單脈沖測(cè)量雷達(dá)測(cè)速系統(tǒng)的關(guān)鍵[1-4]。
論文詳細(xì)內(nèi)容請(qǐng)下載http://theprogrammingfactory.com/resource/share/2000002790
作者信息:
程望東
(南京電子技術(shù)研究所,江蘇 南京210039)
此內(nèi)容為AET網(wǎng)站原創(chuàng),未經(jīng)授權(quán)禁止轉(zhuǎn)載。