CORS系统移动基准站的设计与实现

针对CORS系统RTK服务盲区(RTK使用困难或无法使用)的问题,提出了在CORS系统服务盲区附近建立移动的CORS基准站。通过加密区域CORS系统的基站分布,缩短站间距,改善CORS系统网络RTK在该区域的可用性。通过设计实现的CORS移动基准站系统测试表明:在精度上,移动基准站达到与常规CORS基准站同等的效果,平面x,y≤5cm,高程H≤10cm;在可用性方面,CORS移动基准站自主供电、携带方便、组网灵活,区域网络RTK可用性明显提高。在应急测绘、救灾和临时加密CORS基准站系统等中具有借鉴和实用意义。

Design and implementation of movable reference station for CORS system

In order to solve the problem that there is a blind area in the service of CORS network RTK,resulting from the fact that RTK is unavailable,we propose to establish movable reference station nearby the blind area.By reducing the distance between stations and increasing density of stations,we can improve the availability of the service of the CORS network RTK in this area.Through tests in this paper,it can be proved that the accuracy of this way is the same as that of the conventional CORS reference station,that is,plane coordinate of x and y≤5 cm and elevation coordinate of H ≤ 10 cm.In terms of usability,the movable reference station has independent power supply,flexible networking and portability.Therefore,the availability of network RTK area is obviously improved,which is significant and practical in emergency mapping,disaster rescue and temporarily increasing density.Highlight of innovation is that movable reference stations are advised to lie nearby the blind area in the service of CORS network,which improves the availability of RTK by reducing the distance and increasing density.