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传统的重力仪精度评价方法为重力仪测量值与静态定点值或飞行状态下的重力线网格参考值进行比较,根据差值或相对异常值来评价重力仪的精度指标,但其缺点是飞行轨迹重复性差。火箭橇轨道是进行火箭橇测试的重要组成部分,它严格按照设计建设,长达数公里,拥有完整已知的地理数据信息,且沿着火箭橇轨道布有众多的绝对重力基准点。提出一种基于火箭橇轨道的重力测量系统评价方法,通过火箭橇轨道上的众多绝对重力基准点和重力仪测量得到的重力值比较,评价重力仪的精度指标性能。其优点是该方法能够连续、快速、可重复评价重力测量系统的精度指标,为重力仪研制提供精确的评价手段和鉴定方法。
The traditional gravimeter accuracy evaluation method is to compare the measured value of gravity meter with the static fixed point value or the reference value of gravity line grid in flight state, and to evaluate the accuracy index of gravimeter based on difference or relative outliers, but the disadvantage is that flight Repeatability poor. Rocket sled orbit is an important part of rocket sled testing. It is strictly designed and constructed, with kilometers of complete knowledge of known geo-data and numerous absolute gravimetric references along the rocket sled orbit. A method for evaluating gravity measurement system based on rocket sled orbit is proposed. By comparing the gravity values measured by many absolute gravity reference points on the rocket sled orbit and gravimeter, the performance of the gravity indicator is evaluated. The method has the advantages that the method can continuously, rapidly and repeatedly evaluate the accuracy index of the gravity measurement system and provide the accurate evaluation method and the identification method for the gravimeter development.