本文關(guān)鍵詞：附有約束的BDS單頻單歷元改進型Par Lambda算法　出處：《中國礦業(yè)大學(xué)學(xué)報》2017年01期 　論文類型：期刊論文

  更多相關(guān)文章： 變形監(jiān)測 BDS 基線約束 單頻單歷元 改進型Par Lambda

【摘要】：根據(jù)建筑物變形監(jiān)測的特點,在部分模糊度解算(Par Lambda)算法基礎(chǔ)上提出了一種基于北斗衛(wèi)星導(dǎo)航系統(tǒng)(BDS)的單頻單歷元附有基線約束的改進型Par Lambda算法,該方法采用BDS單歷元測碼偽距和單頻載波相位觀測值組成的雙差觀測方程與基線長度約束方程進行最小二乘解算,獲得模糊度浮點解方差-協(xié)方差陣,根據(jù)模糊度浮點解精度對雙差模糊度進行(2,1,1,…,1)分級處理,基于Lambda算法分批次固定雙差模糊度.采用該方法對BDS系統(tǒng)的B1和B2頻段的1,5和10s短基線數(shù)據(jù)進行單頻單歷元解算.結(jié)果表明:采用BDS單頻單歷元模糊度解算時采用該方法的成功率較傳統(tǒng)方法高,其成功率達到98%以上.
[Abstract]:According to the characteristics of building deformation monitoring. Based on the partial ambiguity resolution (par Lambda) algorithm, a new algorithm based on Beidou Satellite Navigation system (BDS) is proposed. An improved Par Lambda algorithm with baseline constraints for single-frequency single epoch. In this method, the two-difference observation equation composed of the pseudo-range of BDS single epoch code and the observation value of single-frequency carrier phase and the baseline length constraint equation are used to solve the least square solution, and the variance-covariance matrix of ambiguity floating point solution is obtained. According to the precision of floating-point solution of ambiguity, the double difference ambiguity is classified into two grades. Based on the Lambda algorithm, the double difference ambiguity is fixed in batches. The method is applied to the B1 and B2 bands of BDS system. The short baseline data of 5 s and 10 s are used to calculate single frequency single epoch. The results show that the success rate of using BDS single frequency single epoch ambiguity resolution method is higher than that of the traditional method, and the success rate is more than 98%.
【作者單位】： 中國礦業(yè)大學(xué)環(huán)境與測繪學(xué)院;
【基金】：國家自然科學(xué)基金項目(41504032,41371423) 江蘇省自然科學(xué)基金項目(BK20150175)
【分類號】：TU196.1;P228.4
【正文快照】： 由于全球衛(wèi)星導(dǎo)航系統(tǒng)(GNSS)具有快速、全天候、全自動等優(yōu)點,已廣泛應(yīng)用于各類構(gòu)建筑物的實時動態(tài)監(jiān)測.2012年12月27日北斗區(qū)域衛(wèi)星導(dǎo)航系統(tǒng)正式開始運行,北斗載波相位差分定位精度達到或優(yōu)于厘米級[1],可以應(yīng)用于各種構(gòu)建筑物的實時動態(tài)監(jiān)測.在采用北斗衛(wèi)星導(dǎo)航系統(tǒng)(BDS)進，

本文編號：1408361