Construction method and device for deep space probe autonomous navigation system

Abstract

The invention relates to the field of deep space detection, in particular to a construction method and device for a deep space probe autonomous navigation system. The method comprises the following steps that: according to the probing orbit of each stage of the deep space probe, and constructing the kinetic model and the multi-sensor observation model of the autonomous navigation system; further constructing the model error compensation items of two categories of models; according to the stability of space environment where the probing orbit is positioned, on the basis of the model error compensation items, carrying out classified real-time compensation on two categories of model errors; according to a data depth weighing multi-model fusion estimation method, carrying out fusion weighing on the observation data of multiple sensors; and on the basis of the classified real-time compensation of the model errors and the fusion weighing of the observation data, constructing the autonomous navigation system. By use of the method, two categories of model errors, including the kinetic model, the observation model and the like of the deep space probe, are subjected to classified real-time compensation processing, and data is deeply applied to the fusion rule of the multi-sensor observation data so as to improve the accuracy of the deep space probe autonomous navigation system.

Description

technical field [0001] The invention relates to the field of deep space exploration, in particular to a construction method and device for an autonomous navigation system of a deep space probe. Background technique [0002] At present, the deep space probes in operation mainly use radio measurement and control from the ground for navigation. Affected by the curvature of the earth and the rotation of the earth, the ground measurement and control can only observe the local arc of the detector, and cannot cover the entire arc, which affects the navigation accuracy. Moreover, the centralized ground measurement and control leads to risks in the operation of the system. Once the ground measurement and control station fails, the detectors are in danger of being lost. For deep-space transfer orbits, ground measurement and control still has the characteristics of long delay and low precision. For distant planets, ground measurement and control is difficult to guarantee. In addition,...

AI Technical Summary

Problems solved by technology

[0009] The invention provides a method and device for constructing an autonomous navigation system of a deep-space probe to solve the problem of model error compensation in the process of autonomous navigation of the probe and the problem of effective fusion processing of observation data from multiple sensors

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