載機(jī)偏航下基于廣義相鄰多波束自適應(yīng)處理的低空風(fēng)切變風(fēng)速估計

李海; 李怡靜; 吳仁彪

doi:10.11999/JEIT180758

載機(jī)偏航下基于廣義相鄰多波束自適應(yīng)處理的低空風(fēng)切變風(fēng)速估計

doi: 10.11999/JEIT180758

中國民航大學(xué)天津市智能信號與圖像處理重點(diǎn)實(shí)驗室 ??天津 ??300300

基金項目: 國家自然科學(xué)基金(61571442, 61471365, U1633106)，中國民航大學(xué)藍(lán)天青年學(xué)者培養(yǎng)經(jīng)費(fèi)，中央高?；究蒲袠I(yè)務(wù)費(fèi)項目(3122017007)

詳細(xì)信息

作者簡介:
李海：男，1976年生，教授，碩士生導(dǎo)師，研究方向為機(jī)載氣象雷達(dá)信號處理、分布式目標(biāo)檢測與參數(shù)估計、動目標(biāo)檢測與參數(shù)估計等

李怡靜：女，1994年生，碩士生，研究方向為機(jī)載氣象雷達(dá)信號處理

吳仁彪：男，1966年生，教授，博士生導(dǎo)師，研究方向為空管和民航安全智能信息處理航空運(yùn)輸大數(shù)據(jù)、衛(wèi)星導(dǎo)航抗干擾技術(shù)、民航無線電干擾監(jiān)測與自適應(yīng)抑制、通用航空、雷達(dá)信號處理等

通訊作者:
李?！?a href="mailto:elisha1976@163.com">elisha1976@163.com

中圖分類號: TN959.4
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- 文章訪問數(shù): 1903
- HTML全文瀏覽量: 938
- PDF下載量: 55
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-08-03
- 修回日期: 2019-01-11
- 網(wǎng)絡(luò)出版日期: 2019-02-14
- 刊出日期: 2019-07-01

Generalized Adjacent Multi-beam Adaptive Processing Based Low-altitude Wind-shear Wind Speed Estimation under Aircraft Yawing

Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China

Funds: The National Natural Science Foundation of China (61571442, 61471365, U1633106), The Foundation for Sky Young Scholars of Civil Aviation University of China, The National University’s Basic Research Foundation of China (3122017007)

摘要

摘要: 該文提出一種載機(jī)偏航下基于廣義相鄰多波束(GMB)自適應(yīng)處理的低空風(fēng)切變風(fēng)速估計的方法，該方法首先利用基于回波數(shù)據(jù)的雜波距離依賴性補(bǔ)償方法對雜波進(jìn)行距離依賴性矯正，估計出雜波協(xié)方差矩陣。然后同時組合空域的相鄰多個波束與時域的相鄰多個多普勒通道來計算降維變換矩陣，并對待測距離單元內(nèi)的雷達(dá)回波數(shù)據(jù)進(jìn)行降維處理，進(jìn)而構(gòu)造GMB自適應(yīng)處理器的最優(yōu)自適應(yīng)權(quán)矢量對降維后的回波數(shù)據(jù)實(shí)現(xiàn)自適應(yīng)濾波。最后完成載機(jī)偏航下風(fēng)場速度的準(zhǔn)確估計。仿真結(jié)果驗證了該方法能夠在載機(jī)偏航情況下，獲得風(fēng)場速度的有效估計。
- 機(jī)載氣象雷達(dá) /
- 載機(jī)偏航 /
- 低空風(fēng)切變 /
- 廣義相鄰多波束 /
- 風(fēng)速估計
Abstract: This paper presents a method of low-altitude wind-shear speed estimation based on Generalized adjacent Multi-Beam (GMB) adaptive processing under aircraft yawing. The clutter range-dependence compensation method based on echo data is first used to correct the range dependence of clutter for estimating the clutter covariance matrix. Then the dimension-reduced transform matrix is calculated by combining adjacent multiple beams in the airspace and adjacent multiple Doppler channels in time domain simultaneously, and the radar echo data of the measured range bin is reduced in dimension, and then the optimal weight vector of the GMB adaptive processor is constructed to filter adaptively the dimension-reduced data. Finally, the accurate estimation of the wind speed under the aircraft yawing is got. The simulation results show that the proposed method can obtain an effective estimation of wind speed under aircraft yawing.
- Airborne weather radar /
- Aircraft yawing /
- Low-altitude wind-shear /
- Generalized adjacent Multi-Beam (GMB) /
- Wind speed estimation

HTML全文

圖 1 機(jī)載前視陣模型圖

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圖 2 廣義相鄰多波束自適應(yīng)處理器結(jié)構(gòu)圖

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圖 3 廣義相鄰多波束自適應(yīng)處理方法原理圖

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圖 4 雷達(dá)回波信號的空時2維譜

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圖 5 第78號距離單元濾波器頻響圖

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圖 6 本文方法在不同偏航誤差下的風(fēng)速估計結(jié)果對比圖

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圖 7 本文方法同其他方法的風(fēng)速估計結(jié)果對比圖

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圖 8 本文方法在不同空域波束數(shù)情況下的風(fēng)速估計結(jié)果對比圖(多普勒通道數(shù)為3)

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圖 9 本文方法在不同多普勒通道數(shù)情況下的風(fēng)速估計結(jié)果對比圖(空域波束數(shù)為5)

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