陣列米波雷達(dá)測(cè)高方法及性能分析
doi: 10.11999/JEIT161075
基金項(xiàng)目:
中央高?；究蒲袠I(yè)務(wù)費(fèi)項(xiàng)目(K5051202047)
Altitude Measurement Method and Performance Analysis in VHF Array Radar
Funds:
The Fundamental Research Funds for the Central Universities (K5051202047)
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摘要: 米波雷達(dá)在反隱身和抗反輻射導(dǎo)彈等方面有著獨(dú)特的優(yōu)勢(shì)，在現(xiàn)代防空體系中，發(fā)揮著舉足輕重的作用。但多徑信號(hào)的存在，往往對(duì)米波雷達(dá)測(cè)高帶來(lái)困難。該文緊密結(jié)合陣列米波雷達(dá)特點(diǎn)，在陣列多徑信號(hào)模型基礎(chǔ)上，總結(jié)和歸納了以傳統(tǒng)最大似然(ML)算法為基礎(chǔ)的3種米波雷達(dá)測(cè)高方法：基于時(shí)空級(jí)聯(lián)ML算法的測(cè)高方法；基于改進(jìn)的時(shí)空級(jí)聯(lián)ML算法的測(cè)高方法；基于精確最大似然(RML)算法的測(cè)高方法。對(duì)這些方法進(jìn)行了理論性能分析，梳理了3種方法之間的相互關(guān)系，并對(duì)理論分析結(jié)果進(jìn)行了計(jì)算機(jī)仿真實(shí)驗(yàn)，最后給出一些有意義的結(jié)論。
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關(guān)鍵詞:
- 陣列雷達(dá) /
- 米波雷達(dá) /
- 最大似然估計(jì) /
- 多徑信號(hào) /
- 測(cè)高
Abstract: VHF radar has unique advantage in anti-stealth and resisting anti-radiation missile. It plays an important role in modern antiaircraft system. However, the multipath signal often brings difficulties to the altitude measurement of VHF radar. Combining with the characteristics of VHF array radar and array multipath signal model, this paper summarizes and concludes three VHF radar height measurement methods based on the traditional Maximum Likelihood (ML) algorithm: the altitude measurement method based on the temporal-spatial sequential ML algorithm; the altitude measurement method based on the improved temporal-spatial sequential ML algorithm; the altitude measurement method based on the Refined Maximum Likelihood (RML) algorithm. This paper presents the theoretical performance analysis of these methods, the relationship between three methods, and the results of computer simulation experiments. Finally some meaningful conclusions are given.-
Key words:
- Array radar /
- VHF radar /
- Maximum likelihood estimate /
- Multipath signal /
- Altitude measurement
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