地基GPS水汽遥测系统远程通讯与控制系统及其初步应用

Primary Application of Telecommunication and Remote Control System for Ground-Based GPS Water Vapor Remote Sensing System

地基GPS遥感大气水汽技术是20世纪90年代发展起来的一种全新的大气观测手段,建立科学合理的GPS数据实时采集通讯网,实时下载观测数据,可为地基GPS资料应用开发成果的业务化推广提供必要的技术支撑,是地基GPS大气水汽遥感系统可否推广应用的一项关键指标。介绍了采用Modem、依托公共电话网(PSTN)建立起来的远程数据通讯和控制系统。使用该系统可通过电话拨号的方式,对GPS水汽探测网内指定的GPS接收机的参数进行设置,还可以下载该接收机内存储的数据文件。该通讯系统的应用,增强了整个GPS遥感大气水汽探测网的可维护性,为最终实现GPS水汽探测网的业务化运行奠定了一定的理论和实践基础。针对该系统存在的数据下载速度慢,依赖人工操作等缺陷,提出了解决问题的思路。

The use of the ground-based GPS observation technology for estimating precipitable water vapor (PWV) is a brand-new technique developed in the 1990s. An efficient data communication network can help download data in real time and control the GPS receiver remotely and provide the essential technical support for the operational use of ground-based GPS data. The GPS communication and remote control system was developed by using a modem and the public switch telephone network (PSTN). Adopting the dialing approach, the system configures the GPS receiver specified by the GPS water vapor remote sensing network and downloads the data stored in the receiver. The application of this communication system can enhance the maintainability of the system and facilitate the operational application of the GPS water vapor remote sensing network. However, there are still some problems in the system needed to be solved such as low speed and manual control.