FG5／240绝对重力仪成套设备的检定测量分析

详细介绍了FG5/240绝对重力仪的技术特点、测量原理和白家疃的试验观测,并就相配套的用于测量梯度的2台CG5相对重力仪(442、444)的检定项目和结果进行说明和分析,结果表明:2台CG5相对重力仪完全满足规范要求,FG5/240绝对重力仪的试验测量结果的标准偏差优于±2.0×10-8 ms-2,能够用于陆态网络工程任务中部分基准站的绝对重力测量。

Analysis of the Calibration Measurements of the Whole-Set Absolute Gravimeter FG5/240

In the paper the technological features, measuring principle and the test observations at Baijiatong were introduced in detail. At the same time, the calibration items along with the calibrations of two more relative gravimeters for gradient measurement, CG5/442 and CG5/444, which are applied to form a complete set of the absolute gravimeter, were also described and analyzed. Results show that, 2 sets of CG5 can fully satisfy the demands of specifications, and the standard deviation of FG5 test measurements is better than 2.0 ×10^-8ms^-2, which means that the whole set of the FG5 absolute gra vimeter can be applied in the absolute gravimetry of a part of bench stations in the Land Gravity Network Project.