卫星精密定位技术在GPS基线场复测中的应用

发布时间：2019-03-05 20:33

【摘要】：GPS在精密工程测量领域中的应用越来越广泛。人们期望GPS观测的精度也越来越高。伴随着高精度的要求而来的是对观测数据以及与GPS测量有关的各种误差的精密处理。本文以沈阳某GPS基线场为例,探究了GPS测量技术在中、短基线场复测中的相关内容,同时研究了卫星精密定位技术和全站仪复测超短基线场的相关方法,并将两种测量方法的结果做对比。认为在超短基线场测量方面,卫星精密定位技术可以替代全站仪进行复测。本文对GPS在基线场测量具有一定的借鉴意义,本文主要的研究内容以及相关结论如下： (1)研究了卫星精密定位的时间、坐标系统；与精密定位有关的误差及其消除、消弱的方法和措施；以及数据处理的方法,主要是GAMIT软件的基线处理以及COSA软件的网平差。 (2)利用卫星精密定位技术对中、短基线场进行了复测,并结合GAMIT软件、COSA软件处理观测数据,进行网的整体平差得到了符合精度要求的基线场测量成果。 (3)利用卫星精密定位技术对超短基线场进行复测,结合GAMIT软件和COSA软件处理观数据,用高精度全站仪对超短基线场进行复测,并对所测数据进行处理,主要是进行加、乘常数以及气象的改正。将得到的基线边长做比较,得出GPS技术和全站仪测量技术在超短基线场测量中具有相当的精度。
[Abstract]:GPS is more and more widely used in the field of precision engineering survey. It is expected that the accuracy of GPS observation will be higher and higher. With the requirement of high precision, the precision processing of the observed data and all kinds of errors related to the GPS measurement comes. Taking a GPS baseline field in Shenyang as an example, this paper probes into the related contents of GPS measurement technology in medium and short baseline field re-testing, and studies the satellite precise positioning technology and the related methods of ultra-short baseline field re-testing by whole station instrument at the same time. The results of the two methods are compared. It is considered that the satellite precise positioning technology can replace the total station in the measurement of ultra-short baseline field. The main research contents and related conclusions of this paper are as follows: (1) the time and coordinate system of satellite precise positioning is studied; The errors related to precise positioning and the methods and measures to eliminate and weaken, as well as the methods of data processing, are mainly the baseline processing of GAMIT software and the network adjustment of COSA software. (2) the satellite precise positioning technology is used to re-measure the medium and short baseline field, and the observation data are processed by GAMIT software and COSA software, the whole adjustment of the network is carried out, and the measurement results of the base line field accord with the precision requirement are obtained. (3) the ultra-short baseline field is re-measured by using satellite precise positioning technology, and the ultra-short baseline field is re-measured with a high-precision total station with GAMIT software and COSA software, and the measured data are processed, mainly by adding the measured data, and using the high-precision total station to remeasure the ultra-short baseline field with the help of COSA software and high-precision total station. Multiplicative constant and meteorological correction. By comparing the baseline length obtained, it is concluded that the GPS technique and the total station measurement technique have the same accuracy in the ultra-short baseline field measurement.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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