摘要
Abstract The cross-coupling corrections for the LaCoste ＆ Romberg airborne gravimeter are computed as a linear combination of 5 so-called cross-coupling monitors. The weight factors （coefficients） determined from marine gravity data by the factory are obviously not optimal for airborne application. These coefficients are recalibrated by minimizing the difference between airborne data and upward continued surface data （external calibration） and by minimizing the errors at line crossings （internal calibration） respectively. An integrating method to recalibrate the above-mentioned coefficients and the beam scale factor simultaneously is also presented. Experimental results show that the systemic errors in the airborne gravity anomalies can be greatly reduced by using any of the recalibrated coefficients. For example, the systemic error is reduced from 4.8 mGal to 1.8 mGal in Datong test.
为 LaCoste 和 Romberg 的跨 coupling 修正在空中的比重计作为 5 个所谓的跨 coupling 监视器的一个线性组合被计算。由工厂从海洋的严肃数据决定的重量因素(系数) 显然不为在空中的申请是最佳的。这些系数被最小化在空中的数据和向上的继续的表面数据(外部刻度) 之间并且由分别地在线十字路口(内部刻度) 最小化错误的差别重新校准。重新校准的一个集成的方法上述系数和横梁规模因素也同时被介绍。试验性的结果证明在在空中的严肃异例的全身的错误能被使用任何重新校准的系数极大地减少。例如，全身的错误从 4.8 mGalto 被减少在 Datongtest 的 1.8 mGal。
