国产航空重力仪在南极地区的应用分析  

Application research of domestic airborne gravimeter in antarctica

作　　者：孙永超 冯玉祥 崔祥斌[2] 许君 张自强 SUN Yongchao;FENG Yuxiang;CUI Xiangbin;XU Jun;ZHANG Ziqiang(92556 Troop,Zhoushan 316000,China;Polar Research Institute of China,Shanghai 200136,China)

机构地区：[1]92556部队,浙江舟山316000 [2]中国极地研究中心,上海200136

出　　处：《海洋测绘》2022年第3期9-12,21,共5页Hydrographic Surveying and Charting

基　　金：国家自然科学基金(41776186);上海市科技计划(21ZR1469700)。

摘　　要：地球重力场是地球科学的关键参量,受限于偏远位置和恶劣环境,航空重力测量是现阶段在南极地区快速、高效获取大区域重力场信息最为有效的手段。在中国第36次南极科考期间,我国自主研制的航空重力仪首次实现与雪鹰601飞机的系统集成,共完成9个架次,总测线长度近1.5万千米的航空重力观测。围绕此次试验,介绍了国产SGA-WZ02型捷联式航空重力仪的性能特征、系统集成、数据获取、数据处理和精度评估等详细过程。经过精度评估,与同载的GT-2A观测结果外符合精度可以达到2 mGal。结果表明,国产航空重力仪能够适应南极高寒、高纬度的观测条件,这对我国自主载荷在南极应用具有重要借鉴意义。Earth gravity field is a key parameter of Earth science.Due to the remote location and harsh environment,airborne gravity survey is still an efficient method.During the 36th Chinese National Antarctic Research Expedition,the domestic strapdown airborne gravimeter is integrated on the Snow Eagle 601 aircraft.Finally,15000 km lines are surveyed through airborne gravimeter in nine flights.This paper introduces the detailed processes of SGA⁃WZ02,such as performance characteristics,system integration,data acquisition,data processing and accuracy evaluation.The external coincidence accuracy approaches 2 mGal compared with GT⁃2A data.The results show that the domestic airborne gravimeter operates well in high cold and high latitude regions of Antarctica.This application of domestic instruments has great significance for improving the capability of Chinese Antarctic expeditions.

关 键 词：航空重力 捷联式航空重力仪 GT-2A重力仪 典型试验 精度评估 

分 类 号：P244.1[天文地球—测绘科学与技术]