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  本文選題：OTF + 整周模糊度　； 參考：《遼寧工程技術大學》2013年碩士論文

【摘要】：在GNSS定位中，整周模糊度的解算是實現(xiàn)精密定位的關鍵，快速準確的求解整周模糊度對定位精度，縮短定位時間都有重大的意義。本文針對雙差觀測方程的組成進行介紹，并對其線性化方程進行研究。同時也研究了雙差模糊度解算的原理、模型和算法。研究幾種快速解算模糊度的方法，，提出一種單歷元的雙差模糊度解算方法，最后通過實驗進行分析和驗證。本文的研究工作主要有以下幾個方面： 1．介紹GNSS定位的相關理論，包括GNSS載波相位和偽距觀測值及其觀測方程；GNSS單差、雙差觀測值的組合；GNSS定位觀測方程的線性化；GNSS觀測值之間的各種常用組合。 2．研究OTF解算的基本原理，詳細介紹了解算整周模糊度的模型算法，深入研究了整數(shù)最小二乘模糊度降相關平差法，即LAMBDA方法。 3．研究兩種整周模糊度實時快速/單歷元解算方法，提出一種新的單歷元整周模糊度解算方法。首先解算寬巷模糊度，然后固定L1/L2整周模糊度模糊度。結合寬巷整周模糊度的兩步搜索法，可準確確定寬巷模糊度。然后利用無電離層組合觀測值單歷元解算出L1載波相位模糊度。 4．對本文提出的算法進行程序實現(xiàn)，采用實測實驗數(shù)據(jù)對算法的可行性進行了驗證。
[Abstract]:In GNSS positioning, the solution of integer ambiguity is the key to realize precision positioning. It is of great significance to solve the ambiguity of whole cycle quickly and accurately to the positioning accuracy and shorten the positioning time. In this paper, the composition of double difference observation equation is introduced, and its linearization equation is studied. At the same time, the principle, model and algorithm of double difference ambiguity resolution are also studied. In this paper, several methods of fast ambiguity resolution are studied, and a double difference ambiguity resolution method of single epoch is proposed. Finally, the method is analyzed and verified by experiments. The research work of this paper mainly includes the following aspects: 1. This paper introduces the relevant theories of GNSS positioning, including the carrier phase and pseudo-range observations of GNSS and their observation equations, such as the single difference of GNSS, the combination of double difference observations and the linearization of the observation equations of GNSS positioning, and the commonly used combinations between the observed values of GNSS carrier phase and pseudo-range. 2. In this paper, the basic principle of OTF solution is studied, the model algorithm of integer ambiguity is introduced in detail, and the integer least squares correlation adjustment method, I. e., LAMBDA method, is studied in depth. 3. In this paper, two real time fast / single epoch methods for integer ambiguity resolution are studied, and a new method for integer cycle ambiguity resolution of single epoch is proposed. First, the ambiguity of wide lane is solved, then the ambiguity of whole cycle of L1/L2 is fixed. The ambiguity degree of wide lane can be accurately determined by two step search method combined with the whole cycle ambiguity of wide roadway. Then the L1 carrier phase ambiguity is calculated by using the single epoch of ionospheric combined observations. 4. The feasibility of the algorithm is verified by the experimental data.
【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P228.4

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9 邢U

本文編號：1952057