基于TTG软件的CORS实时坐标转换服务的建立

连续运行卫星定位服务系统（Continuously Operation Reference System,CORS）改变了传统的基于大地控制网的测绘作业模式,以集中网络化的方式向用户提供实时和事后的精密定位服务.但是目前CORS坐标转换的实时性不足、精度不均匀等问题,通过计算区域转换参数和建立高程改正格网来提供基于CORS的实时坐标转换服务.本文以TTG（Trimble Transformation Generator）软件应用为例,基于TrimbleCORS系统,实现区域实时坐标转换服务,将实时坐标转换点和该区域已有控制点进行比较,从而更好地评定TTG软件应用的实际效果,同时对CORS安全服务技术的研究,提供一定的参考基础.

The Establishment of CORS Real-time Coordinate Conversion Service Based on TTG Software

Continuous operation of satellite positioning service system （Continuously Operation Reference System, CORS） changed the geodetic control network surveying and mapping work mode based on the traditional, provides precise positio- ning service time and afterwards to the user in a centralized network way. But the lack of real-time problem, the CORS coordinate transformation precision is not uniform, by calculating the area of transformation parameters and establish the elevation correction grid to provide real-time coordinate conversion service based on CORS. In this paper, TTG （Trimble Transformation Generator） software application as an example, Trimble based CORS system, realize service transition ar- ea real time coordinate, the real time coordinate transformation and compared the existing control point, so as to better as- sess the actual effect of application of TTG software, and the research on CORS security service technology, providing certain reference foundation.