Assessment method of short-baseline relative orbit perturbation gravitational field measurement performance

Abstract

The invention provides an assessment method of short-baseline relative orbit perturbation gravitational field measurement performance. The relations between the short-baseline relative orbit perturbation gravitational field measurement performance and task parameters are established in an analysis mode, so that by only obtaining the gravitational field measurement task parameters and inputting the gravitational field measurement task parameters into an analysis relational expression, the gravitational field measurement performance, such as a gravitational field measurement effective order, geoid surface precision and gravity abnormity precision, can by rapidly analyzed and obtained. The method has the advantages that the analysis speed is high, the optimized design of gravitational field measurement task parameters can be conveniently and rapidly carried out, and the defects caused by a conventional numerical simulation method that the calculation time is long and the influence rules of the task parameters on the gravitational field measurement performance are difficult to obtain are overcome.

Description

technical field [0001] The invention belongs to the technical field of space-based gravitational field measurement, and in particular relates to a method for evaluating the measurement performance of a short baseline relative to an orbital perturbation gravitational field. Background technique [0002] The earth's gravitational field reflects the distribution and movement of the earth's matter, determines many physical events in and around the earth, and is the basic information for geodesy, geophysics, atmosphere, oceanography, glaciology and other earth science research It is widely used in various national economies such as natural disaster forecasting, mineral resource exploration, and large-scale project implementation. Therefore, the measurement of the earth's gravitational field has always been highly valued by countries all over the world, and has extremely important research value. [0003] Since the beginning of the 21st century, space-based gravity field measurem...

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Problems solved by technology

[0004] At present, in the short-baseline relative orbit perturbation gravitational field measurement research, too much reliance on numerical simulation to evaluate the gravitational field measurement performance, although the evaluation accuracy is effectively guaranteed, but the amount of calculation is huge, the task design cycle is long, and there is a lack of systematic It is not conducive to accurately grasp the role of task parameters on the measurement task and its optimal selection

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