本文關(guān)鍵詞：門限設(shè)置對雷達(dá)數(shù)據(jù)質(zhì)量的影響研究　出處：《雷達(dá)科學(xué)與技術(shù)》2015年05期 　論文類型：期刊論文

  更多相關(guān)文章： 數(shù)據(jù)質(zhì)量 參數(shù)門限 信號質(zhì)量因子 雜波校正因子

【摘要】：天氣雷達(dá)信號處理過程中,回波信號經(jīng)譜矩估計得到反映氣象目標(biāo)信息的平均回波功率、平均徑向速度和速度譜寬等信息參數(shù),但是處理得到的回波數(shù)據(jù)中不僅包含有用回波數(shù)據(jù),而且保留有地物雜波、系統(tǒng)噪聲和失真回波數(shù)據(jù)等干擾回波,它們嚴(yán)重影響雷達(dá)數(shù)據(jù)質(zhì)量。但是干擾回波和降水回波是有很明顯的信號特征差異的,比如信號強(qiáng)度和信號相干性,根據(jù)這些特征參數(shù)可以有效識別干擾回波數(shù)據(jù),選取信號特征差異比較明顯的參數(shù)進(jìn)行研究,通過設(shè)置門限閾值,對譜矩估計得到的基數(shù)據(jù)進(jìn)行質(zhì)量控制。實(shí)際處理結(jié)果表明,通過聯(lián)合使用多種門限參數(shù)能夠有效識別和濾除各種干擾回波數(shù)據(jù),天氣雷達(dá)基數(shù)據(jù)質(zhì)量得到明顯改善。
[Abstract]:Weather radar signal processing, echo signal by spectrum estimation to obtain the average echo power reflect the information of meteorological targets, wide information parameters of the average radial velocity and velocity spectrum, but the echo data processing obtained not only contains useful echo data, and to retain physical clutter and system noise and distortion of echo data of interference echo and they seriously affect the quality of the data. But the radar echo and echo interference precipitation are different signal characteristics obviously, such as signal strength and signal coherence, according to these parameters can effectively identify interference echo data of parameters of signal characteristic differences, by setting the threshold, spectrum estimation based on the data quality control. The calculation results show that, it can effectively identify and remove all kinds of interference by the combined use of multiple threshold parameters Echo data, weather radar based data quality has been significantly improved.

【作者單位】： 解放軍理工大學(xué)氣象海洋學(xué)院;
【分類號】：TN959.4
【正文快照】： 及其衍生產(chǎn)品能準(zhǔn)確地反映氣象目標(biāo)信息,提高多普勒天氣雷達(dá)基數(shù)據(jù)質(zhì)量非常關(guān)鍵[1]。0　引言根據(jù)在信號與數(shù)據(jù)處理過程中引入質(zhì)量控制　　多普勒天氣雷達(dá)可以獲取降水區(qū)域回波強(qiáng)方法的不同階段,目前天氣雷達(dá)數(shù)據(jù)質(zhì)量控制方度、徑向速度和速度譜寬等基數(shù)據(jù)。通過對基數(shù)法的研究，

本文編號：1387786