本文關(guān)鍵詞： SSS模型 GDOP值 精密定軌 時(shí)效性 網(wǎng)格劃分 優(yōu)化選站　出處：《武漢大學(xué)學(xué)報(bào)(信息科學(xué)版)》2017年06期 　論文類型：期刊論文

【摘要】：針對(duì)GNSS(global navigation satellite system)數(shù)據(jù)分析中心對(duì)快速、超快速軌道產(chǎn)品精度及時(shí)效性的要求以及全球跟蹤站分布不均勻性的現(xiàn)狀,本文提出一種基于觀測(cè)方程GDOP(geometric dilution of precision)值的優(yōu)化選站SSS(selected step by step)模型。從理論上推導(dǎo)出精密定軌最小地面跟蹤站數(shù)與地面最優(yōu)跟蹤站數(shù)的計(jì)算方法,分別通過s°×s°和k°×k°帶全球網(wǎng)格劃分,篩選最小跟蹤站全球分布,以定軌觀測(cè)方程GDOP值最小為準(zhǔn)則,逐步累加篩選定軌全球跟蹤站最優(yōu)分布。連續(xù)6d的數(shù)據(jù)分析結(jié)果表明,本文提出的優(yōu)化選站模型,在相同數(shù)據(jù)處理能力條件下,定軌精度可達(dá)整體處理的90%,處理時(shí)間縮短50%以上;與一般策略對(duì)比表明,SSS模型計(jì)算出的軌道精度相當(dāng),時(shí)間節(jié)約20%左右;此模型所選跟蹤站為最優(yōu)或次優(yōu),提高了分析中心數(shù)據(jù)處理效率。
[Abstract]:Aiming at the requirements of GNSS(global navigation satellite system data analysis center for the accuracy and timeliness of fast and ultra-fast track products and the current situation of uneven distribution of global tracking stations, In this paper, an optimal SSS(selected step by step model based on the GDOP(geometric dilution of prediction value is proposed. The calculation method of the minimum ground tracking stations and the optimal ground tracking stations for precise orbit determination is derived theoretically. The global distribution of the smallest tracking station is screened by the global grid division in the s 擄脳 s 擄and k 擄脳 k 擄zones, and the optimal distribution of the global tracking station is gradually accumulated according to the minimum GDOP value of the orbit determination equation. The results of data analysis for 6 consecutive days show that, Under the same data processing capacity, the optimal station selection model proposed in this paper can achieve 90 percent orbit determination accuracy and reduce processing time by more than 50%. The comparison with the general strategy shows that the orbit accuracy calculated by the SSS model is similar to that calculated by the SSS model. The time saving is about 20%, and the tracking station selected by this model is the best or sub-optimal, which improves the efficiency of data processing in the analysis center.
【作者單位】： 中國礦業(yè)大學(xué)環(huán)境與測(cè)繪學(xué)院;
【基金】：國家自然科學(xué)基金(41404033,51374209) 國家重點(diǎn)實(shí)驗(yàn)室開放基金重點(diǎn)項(xiàng)目(SKLGIE2014-Z-1-1) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金(2011QNA02) 高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金(20130095110022)~~
【分類號(hào)】：P228.4

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1 劉會(huì)杰,張乃通;基于GDOP的最優(yōu)定位星座性能研究[J];高技術(shù)通訊;2000年01期

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4 曹相;高成發(fā);;GPS精密單點(diǎn)定位中GDOP的選星處理[J];中國高新技術(shù)企業(yè);2007年04期

5 向才炳;邊少鋒;吳澤民;;GPS/BDS空間可見性與GDOP分析[J];海洋測(cè)繪;2013年06期

6 薛樹強(qiáng);楊元喜;陳武;黨亞民;;正交三角函數(shù)導(dǎo)出的最小GDOP定位構(gòu)型解集[J];武漢大學(xué)學(xué)報(bào)(信息科學(xué)版);2014年07期

7 東f ,賈傳熒,谷偉;GPS中GDOP與Gu之間關(guān)系的研究[J];大連海運(yùn)學(xué)院學(xué)報(bào);1993年02期

8 鄭作亞,黃s，

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