CAJ | 학술논문

基于DGPS在GT?1A型航空重力系统测量中的应用，针对GPS基站的位置精度和选择展开探讨，并对计算获得的空间重力异常结果进行对比分析。对比结果表明GPS基站所用位置值不同会引起测线空间重力异常的水平误差，相同测线经过水平调整后基本保持一致。 GPS基站和移动站的距离长短对测线空间重力异常的局部细节幅值有影响，进行水平调整后相同测线间的内符合总精度为0．3 mGal左右。
기우DGPS재GT?1A형항공중력계통측량중적응용，침대GPS기참적위치정도화선택전개탐토，병대계산획득적공간중력이상결과진행대비분석。대비결과표명GPS기참소용위치치불동회인기측선공간중력이상적수평오차，상동측선경과수평조정후기본보지일치。 GPS기참화이동참적거리장단대측선공간중력이상적국부세절폭치유영향，진행수평조정후상동측선간적내부합총정도위0．3 mGal좌우。
Based on the application of DGPS in GT?1A airborne gravity measurement system, the authors discussed the selection and precision of GPS stations, and analyzed a variety of calculated free air anomaly results in detail. The final results indicate that the dif?ferent values of GPS basic station position induces the horizontal error of free air anomaly on survey lines, and the results on the same survey line can almost reach the same precision after horizontal adjustments. In addition, the distances between GPS basic stations and rover stations have impacts on the locally detailed amplitudes of free air anomaly. After horizontal adjustments, the internal accord accu?racy on the same survey line can reach almost 0.3.