發(fā)布時間：2018-06-17 02:08

  本文選題：超高頻雷達(dá) + 通道校準(zhǔn)��； 參考：《華中科技大學(xué)學(xué)報(自然科學(xué)版)》2014年09期

【摘要】：針對河流探測的超高頻雷達(dá)系統(tǒng),提出了一種利用河流回波信號校準(zhǔn)陣列通道的算法.單站超高頻雷達(dá)垂直于河道方向的徑向流速為0m/s,其回波信號對應(yīng)多普勒譜圖的布拉格頻點(diǎn)處,利用該頻點(diǎn)可以對通道進(jìn)行校準(zhǔn).這里研究了利用布拉格頻率處的回波譜對超高頻雷達(dá)系統(tǒng)進(jìn)行通道校準(zhǔn)的方法,實(shí)測數(shù)據(jù)處理結(jié)果表明,該方法對空間譜估計(jì)性能的改善十分明顯,大幅提高了信號到達(dá)角估計(jì)的準(zhǔn)確性.
[Abstract]:An algorithm for calibrating array channels using river echo signals is proposed for the ultra-high frequency radar system of river detection. The radial velocity of the single station UHF radar is 0 m / s perpendicular to the channel. The echo signal corresponds to the Bragg frequency point of the Doppler spectrum and the channel can be calibrated by using this frequency point. In this paper, the channel calibration method of UHF radar system using echo spectrum at Bragg frequency is studied. The experimental data processing results show that the performance of spatial spectrum estimation is greatly improved by this method. The accuracy of the signal angle of arrival estimation is greatly improved.
【作者單位】： 武漢大學(xué)電子信息學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(61371063)
【分類號】：TN957.51
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本文編號：2029131