新一代天氣雷達(dá)地物回波及電磁干擾質(zhì)控算法業(yè)務(wù)試運(yùn)行評(píng)估

doi:10.3969/2015jms.0085

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新一代天氣雷達(dá)地物回波及電磁干擾質(zhì)控算法業(yè)務(wù)試運(yùn)行評(píng)估
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                        10.3969/2015jms.0085
                    
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基金項(xiàng)目:中國(guó)氣象局重點(diǎn)工程項(xiàng)目“新一代天氣雷達(dá)建設(shè)業(yè)務(wù)軟件系統(tǒng)開(kāi)發(fā)項(xiàng)目”；國(guó)家自然科學(xué)基金資助項(xiàng)目（41175038）；國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃（973計(jì)劃）項(xiàng)目（2012CB417202）；國(guó)家科技支撐項(xiàng)目（2012BAC22B00）

Operational evaluation of radar data quality control for ground clutter and electromagnetic interference

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對(duì)雷達(dá)基數(shù)據(jù)質(zhì)控方法的定量評(píng)估是業(yè)務(wù)應(yīng)用推廣的重要步驟。本文針對(duì)中國(guó)氣象科學(xué)研究院研發(fā)的地物回波及電磁干擾回波質(zhì)控算法在“新一代天氣雷達(dá)建設(shè)業(yè)務(wù)軟件系統(tǒng)開(kāi)發(fā)及應(yīng)用（ROSE）”系統(tǒng)中的業(yè)務(wù)試應(yīng)用，使用2014年4-10月系統(tǒng)試運(yùn)行的10個(gè)雷達(dá)站的數(shù)據(jù)，提出了評(píng)估方法及評(píng)估指標(biāo)。利用統(tǒng)計(jì)和典型個(gè)例分析方法對(duì)算法進(jìn)行了初步業(yè)務(wù)試運(yùn)行的效果評(píng)估，驗(yàn)證了算法的可靠性，提出了適用范圍及改進(jìn)措施。結(jié)果表明：該方法對(duì)地物回波的識(shí)別成功率為92.29%，但存在漏判和誤判。參與評(píng)估的CB雷達(dá)徑向速度資料質(zhì)量高，識(shí)別效果好；SA和SB雷達(dá)的識(shí)別效果受到了觀測(cè)模式等導(dǎo)致徑向速度資料質(zhì)量變差的影響。電磁干擾回波的識(shí)別成功率為94.39%，能有效識(shí)別小于5個(gè)徑向的窄條幅狀干擾回波，但仍需改進(jìn)算法完成對(duì)麻點(diǎn)狀、螺旋狀和大面積徑向干擾回波的自動(dòng)識(shí)別。對(duì)雷達(dá)資料的定量應(yīng)用，需采取質(zhì)控，而預(yù)報(bào)員的實(shí)時(shí)觀測(cè)可根據(jù)情況進(jìn)行選擇性質(zhì)控。

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The quantitative evaluation on radar base data quality control is an important step towards operational application and promotion. Aiming at the ground clutter and electromagnetic interference quality control algorithm developed by Chinese Academy of Meteorological Science in "Radar Operational Software Engineering(ROSE)" system application, ten radar stations data from April to November in 2014 were used to establish an evaluation method. The algorithms had been conducted a preliminary trial operation by statistical and typical analysis method,in order to prove its reliability and raise its flexible foundations and improvement approach. Results demonstrate that the success rate for ground clutter recognition is 92.29%, but the miss of judgement of ground clutter and erroneous judgment of meteorological echo are unavoidable. The recognition effect of CB radar is good because of its high quality of velocity. The recognition effect of SA and SB radar is affected by the observation mode, which leads to the poor quality of velocity. The success rate of electromagnetic interference recognition is 94.39%, which could recognize the narrow bar-type electromagnetic interference less than 5 radial. Meanwhile, it should make further improvements on the algorithm to complete the automatic recognition for the large area interference, dotted interference and spiral interference. The quantitative radar data application requires quality control, but weatherman could decide whether to use it or not based on the real-time observation.

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文浩,劉黎平,張持岸,尹春光,張揚(yáng),石城.新一代天氣雷達(dá)地物回波及電磁干擾質(zhì)控算法業(yè)務(wù)試運(yùn)行評(píng)估.氣象科學(xué),2016,36(6):789-799 WEN Hao, LIU Liping, ZHANG Chi'an, YIN Chunguang, ZHANG Yang, SHI Cheng. Operational evaluation of radar data quality control for ground clutter and electromagnetic interference. Journal of the Meteorological Sciences,2016,36(6):789-799

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收稿日期:2015-07-11
最后修改日期:2015-11-12
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