多型航空重力仪同机测试及其数据分析

介绍了运8飞机加装4型5套航空重力仪开展同机测试的整体情况,对5套重力仪所获取的重复线和测网成果数据进行了对比分析。试验结果表明,俄罗斯GT-1A航空重力仪具有最佳的综合性能技术指标,平差前测量精度为±2.45mGal;美国TAGS航空重力仪为其次,平差前测量精度为±3.9mGal;SII型船载海空重力仪可改造升级为航空重力仪,并具有与TAGS同等的综合性能技术指标;国内自主研发的SGA-WZ01捷联航空重力仪具有最佳的重复线测量精度,测网精度接近于GT-1A航空重力仪水平,平差前测量精度为±2.96mGal,另一款自主研制的GDP-1重力仪首次成功实现了航空重力测量功能,平差前测量精度为±4.52mGal。

Tests of Multi-type Airborne Gravimeters and Data Analysis

This paper introduces the tests of 5 airborne gravimeters with 4 different types equipped onboard the same Y-8 aircraft. Repeated lines acquired by the 5 gravimeters and survey grid achievement data are comparatively analysed. The results show that GT-1A airborne gravimeter of Russia, with a survey precision of ＋2.45mGal before adjustment,has the best technical index of comprehensive performance, followed by TAGS airborne gravimeter of the USA with a survey precision of ± 3. 9mGal before adjustment. SII shipborne aeromarine gravimeter can be upgraded into an airborne gravimeter with the equivalent technical index of comprehensive performance to TAGS. The domestic self-developed SGA-WZ01 Jielian airborne gravimeter has the most superior precision in repeated line tests, and the survey grid precision of which approaches to that of GT-1A airborne gravimeter, with a survey precision of ±2.96mGal before adjustment. Another self-developed GDP-1 gravimeter firstly has good success in realizing the function of airborne gravity survey with a survey precision of ±4.52mGal before adjustment.