高頻地波雷達(dá)基于海洋回波的通道幅度自校準(zhǔn)方法
Self-calibration method of channel amplitude of HF ground wave radar based on sea echo
-
摘要: 針對海洋回波的特性,以及高頻地波雷達(dá)OSMAR2000的實際工作性能,提出一種基于海洋回波采樣數(shù)據(jù)的自適應(yīng)通道幅度軟件校準(zhǔn)方法。該方法不需要輔助信號源,能針對每一距離元進(jìn)行通道幅度的實時校準(zhǔn),校準(zhǔn)后的空間譜質(zhì)量顯著提高,并能在通道失效時給出示警信息。文中給出了現(xiàn)場實測數(shù)據(jù)的處理結(jié)果及比較。
-
關(guān)鍵詞:
- 高頻地波雷達(dá); 海洋回波; 通道幅度; 自校準(zhǔn); OSMAR2000
Abstract: A software self-calibration method of the channel amplitude of HF ground wave radar based on the received sea echo data is developed in this paper, in accordance with the characteristics of sea echo and the actual performance of the Ocean State Measuring and Analyzing Radar (OSMAR2000). The method does not need auxiliary signal source and can real-time calibrate channel amplitude for every range cell. Using the method, the radar system can give out warning information in the case of channel failure. The quality of spatial spectra improves much after channel amplitude calibration by the method. Some processing results of the OSMAR2000 field measurement and their comparison are illustrated in this paper. -
楊紹麟,柯亨玉,侯杰昌等,OSMAR2000基于MUSIC的超分辨率海洋表面流算法,863計劃818-01-02課題-高頻地波雷達(dá)海洋環(huán)境監(jiān)測技術(shù)資料集,2000,12,137-145.[2]李全力,肖克賜,空間譜估計測向系統(tǒng)信道失配的單信號源校準(zhǔn)方法,電子學(xué)報,1991,19(2),123-125.[3]楊超,阮穎錚,空間譜估計測向中通道失配與陣元互耦的一次性補(bǔ)償,電子科學(xué)學(xué)刊,1995,17(2),206-209.[4]姚康澤,梁甸農(nóng),模型誤差對陣列信號特征結(jié)構(gòu)的影響及一種校準(zhǔn)方法,系統(tǒng)工程與電子技術(shù),1996,18(8),44-47.[5]王學(xué)禮,李舜酩,陳仲儀等,多信號源方向和頻率估計中通道失配和陣元互耦的一次性補(bǔ)償,電子科學(xué)學(xué)刊,2000,22(1),28-34.[6]D.E. Barrick, J. M. Headrick, R. W. Bogle, D. D. Crombie, Sea backscatter at HF: interpretationand utilization of the echo. Proc. IEEE, 1974, 62(6), 673-680.[7]B.J. Lipa, D. E. Brarrick, Least-squares methods for the extraction of surface currents fromCODAR crossed-loop data: application at ARSLOE, IEEE J. of Oceanic Engineering, 1983, 8(4),226-253. -
計量
- 文章訪問數(shù): 2545
- HTML全文瀏覽量: 171
- PDF下載量: 859
- 被引次數(shù): 0
下載:
