差分GPS定位系统在直升机航空重力测量系统中的集成与应用  

Integration and Application of Differential GPS Positioning System in Helicopter Airborne Gravity Measurement System

作　　者：徐剑春 郭华 黄锦鹏 夏玲燕 吴成平 XU Jianchun;GUO Hua;HUANG Jinpeng;XIA Lingyan;WU Chengping(China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083;Chinese Academy of Geological Sciences,Beijing 100037;China University of Geosciences(Beijing),Beijing 100083)

机构地区：[1]中国自然资源航空物探遥感中心,北京100083 [2]中国地质科学院,北京100037 [3]中国地质大学(北京),北京100083

出　　处：《导航与控制》2024年第5期95-100,共6页Navigation and Control

基　　金：地质调查项目(编号:DD20243057)。

摘　　要：差分GPS测量系统是首先利用已知精确三维坐标的差分GPS基站,求得定位的修正值,再将这个修正值发送给GPS移动站,对GPS移动站的测量数据进行修正,以提高GPS定位的精度。介绍了差分GPS定位的原理,依托于地质调查项目将差分GPS定位系统应用于直升机航空重力测量系统导航中,尝试基于直升机平台建立有差分GPS定位导航的航空重力测量系统。通过基站、移动站的建立等阐述差分定位系统在直升机航空重力测量系统中的集成方法,并通过解算数据分析了差分GPS导航的定位精度。结果表明,差分GPS测量与单点GPS测量相比,定位精度从10 m变化到0.1 m,满足航空重力测量系统对GPS定位精度的要求。The differential GPS measurement system firstly uses a differential GPS base station with known accurate three-dimensional coordinates to obtain the positioning correction value,and then sends this correction value to the GPS mobile station to correct the measurement data of the GPS mobile station to improve the accuracy of GPS positioning.In this paper,the principle of differential GPS positioning is introduced.Relying on the geological survey project,the differential GPS positioning system is applied to the navigation of the helicopter aviation gravity measurement system,and attempts to establish an aviation gravity measurement system with differential GPS positioning navigation based on the helicopter platform.The integration method of the differential positioning system in the helicopter aviation gravity measurement system is explained through the establishment of base stations and mobile stations,and the positioning accuracy of differential GPS navigation is analyzed by solving data.The results show that compared with single-point GPS measurement,the positioning accuracy of differential GPS measurement is changed from 10 m to 0.1 m,which meets the requirements of aviation gravity measurement system for GPS positioning accuracy.

关 键 词：差分GPS 重力测量 定位导航 定位精度 

分 类 号：P5[天文地球—地质学]