一種基于雙頻非差GNSS相位數(shù)據(jù)的周跳實時探測與修復方法
發(fā)布時間:2018-08-26 19:01
【摘要】:在TurboEdit方法的基礎上,提出一種雙頻非差GNSS相位數(shù)據(jù)周跳實時探測與修復算法。在MW組合中,根據(jù)衛(wèi)星高度角進行定權并結合移動窗口遞推計算寬巷模糊度。在電離層殘差組合的基礎上進行歷元間二次差分,以更好地減弱電離層殘差對周跳檢驗量的影響。當探測出存在周跳的歷元之后,采用搜索法進行修復。通過采用30s的靜態(tài)數(shù)據(jù)和1s的動態(tài)數(shù)據(jù),并在觀測數(shù)據(jù)中模擬加入小周跳、大周跳對該方法分別進行測試。結果表明,該方法可正確實現(xiàn)周跳的實時探測與修復。
[Abstract]:Based on the TurboEdit method, a real time cycle slip detection and repair algorithm for dual frequency nondifferential GNSS phase data is proposed. In the MW combination, the weight is determined according to the satellite altitude angle and the ambiguity of wide lane is calculated by recursion of moving window. Based on the ionospheric residuals combination, the quadratic difference between epoch is carried out to better reduce the influence of ionospheric residuals on the circumferential slip detection. When the epoch with cycle slip is detected, the search method is used to repair it. By using the static data of 30s and the dynamic data of 1 s, and adding small cycle jump to the observed data, the method is tested by the large cycle jump. The results show that this method can correctly detect and repair cycle slips in real time.
【作者單位】: 長安大學地質(zhì)工程與測繪學院;地理信息工程國家重點實驗室;
【基金】:中國博士后科學基金(2016M592733) 地理信息工程國家重點實驗室開放基金(SKLGIE2015-M-2-4) 中央高校基本科研業(yè)務費專項(310826151049)~~
【分類號】:P228.4
[Abstract]:Based on the TurboEdit method, a real time cycle slip detection and repair algorithm for dual frequency nondifferential GNSS phase data is proposed. In the MW combination, the weight is determined according to the satellite altitude angle and the ambiguity of wide lane is calculated by recursion of moving window. Based on the ionospheric residuals combination, the quadratic difference between epoch is carried out to better reduce the influence of ionospheric residuals on the circumferential slip detection. When the epoch with cycle slip is detected, the search method is used to repair it. By using the static data of 30s and the dynamic data of 1 s, and adding small cycle jump to the observed data, the method is tested by the large cycle jump. The results show that this method can correctly detect and repair cycle slips in real time.
【作者單位】: 長安大學地質(zhì)工程與測繪學院;地理信息工程國家重點實驗室;
【基金】:中國博士后科學基金(2016M592733) 地理信息工程國家重點實驗室開放基金(SKLGIE2015-M-2-4) 中央高校基本科研業(yè)務費專項(310826151049)~~
【分類號】:P228.4
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