本文選題：網絡RTK　切入點：復雜環(huán)境　出處：《山東科技大學》2017年碩士論文

【摘要】：網絡RTK在的工程測量過程中極其重要的作用。在實際測量中經常會遇到環(huán)境因素對信號的遮擋,造成定位精度下降,本文利用泰安市高新技術開發(fā)區(qū)的大量實測數據,針對建筑物附近、樹木以及高壓線下等因素,做了大量實驗[1],主要研究容如下:(1)選擇泰安市一天門大街道路單側樹林測區(qū),對樹木下、樹木旁、樹林中三個環(huán)境下的實驗研究,對這三種環(huán)境下測量數據的內外符合精度的對比,得出結論。當在樹木下測量時,初始化一段時間內只能獲得浮點解或者差分解,平面精度均大于0.2m,隨著時間推移,衛(wèi)星運動模糊度被確定,隨后的一段時間內根據內外符合精度分析得,平面方向可以控制在3cm左右,高程5cm左右,滿足一般工程測量要求。當在樹木旁邊測量時隨著距離的增加,觀測點受影響程度逐漸降低。在樹林中,很難測得固定解。主要為單點解,平面誤差上升至米級,不滿足一般工程測量需要求。(2)通過研究建筑物對測量結果的影響實驗分析。得出了在只有一側有建筑物的情況下,接收機與建筑物頂端的連線與建筑物所成夾角是影響定位精度的關鍵,當夾角小于9.5°時,無法獲得可靠觀測解;在兩側都有建筑物的情況下,特別的,當建筑物高度大于兩建筑物距離2倍關系時,這個觀測角度應至少保證在15°以上,才能保證精度可靠穩(wěn)定。(3)通過研究高壓線下對網絡RTK的影響,點位誤差統(tǒng)計分析得出結論。第一,高壓線對定位的影響程度要小于建筑物遮擋與樹木遮擋,即使在高壓線下固定解精度仍可保持在平面3cm左右,高程5cm左右,但在正午期間這個精度要相對較低。第二,通過數據分離發(fā)現固定解也分等級,正午期間的固定解平面均在3-4cm之間而早晨與傍晚時分固定解平面精度均在0-3cm之間,所以在高壓線下測量時為保證高精度應盡量避免在正午期間觀測。
[Abstract]:The network RTK plays an extremely important role in the engineering survey process. In the actual measurement, the environmental factors often block the signal, which results in the decrease of the positioning accuracy. In this paper, a large number of measured data from the Taian High-Tech Development Zone are used. A large number of experiments have been carried out in the vicinity of buildings, trees and under high-voltage lines [1]. The main research contents are as follows: (1) A forest survey area on one side of Yitianmen Street Road in Tai'an City was selected. The experimental study was carried out under trees, beside trees, and in three environments, namely, trees, trees, and trees. The conclusion is drawn from the comparison of the internal and external coincidence accuracy of the measured data in these three environments. When measuring under trees, only floating-point solutions or differential decomposition can be obtained in the initial period of time, and the plane accuracy is more than 0.2 m.The plane accuracy is more than 0.2 m, and over time, The ambiguity of satellite motion is determined. According to the accuracy analysis of internal and external coincidence, the plane direction can be controlled around 3cm, and the elevation 5cm can be controlled. Meet the requirements of general engineering survey. When measuring next to trees, the influence degree of observation point decreases gradually with the increase of distance. In the forest, it is very difficult to measure the fixed solution. The main solution is single point solution, and the plane error rises to meter level. Through the experimental analysis of the influence of the building on the survey results, it is concluded that in the case of only one side of the building, there is only one side of the building. The angle between the receiver and the top of the building is the key to the positioning accuracy. When the angle is less than 9.5 擄, the reliable observation solution can not be obtained. When the height of the building is 2 times greater than the distance between the two buildings, the observation angle should be at least 15 擄above, so as to ensure the accuracy, reliability and stability.) the influence of the high voltage line on the RTK of the network is studied. First, the influence of high voltage line on location is smaller than that of building and tree, even if the precision of fixed solution can be maintained at the level of 3cm or 5cm under the high voltage line, the results are as follows: (1) the influence of high voltage line on location is lower than that of building and tree. However, the accuracy is relatively low during noon. Secondly, the fixed solution plane is found to be graded by data separation. The fixed solution plane during noon is between 3-4cm and the fixed solution plane accuracy is between 0-3cm in the morning and evening. Therefore, in order to ensure high accuracy under the high voltage line, we should avoid observation during noon as far as possible.
【學位授予單位】：山東科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TB22

【參考文獻】

相關期刊論文 前7條

1 牟春龍;焦洋;;GPS在路橋工程測量中的應用[J];科技視界;2015年10期

2 楊丹;隋心;;惡劣環(huán)境下GPS-RTK實際定位精度測試[J];遼寧省交通高等專科學校學報;2014年03期

3 曹新運;王堅;劉超;;DOP值進行GNSS相對定位預報的適用性研究[J];大地測量與地球動力學;2013年01期

4 過靜s，

本文編號：1653213