Locating method for non-cooperative targets in images of Martian surface

Abstract

The invention provides a locating method for non-cooperative targets in images of the Martian surface. The locating method comprises the following steps that step 1, a Mars exploration mission groundapplication system is responsible for proposing the acquisition task, aiming to the targets on the Martian surface, of location locating information of the images on the Martian surface; step 2, the factors of device-ground time delay and device-ground timing system are considered, a ground observation and control system, a VLBI orbit measurement system and a detector autonomous navigation systemuse the images of the targets on the Martian surface in the step 1 as input to complete the extrapolation data acquisition of the orbit information of a detector and carry out the correlation analysisof positioning errors. The locating method further improves the locating information accuracy.

Description

technical field [0001] The present invention relates to the field of Mars exploration engineering, and in particular relates to a method for locating non-cooperative targets in Mars surface images. Background technique [0002] The Mars exploration project is one of the important hot topics in the field of deep space exploration. The scientific goals of the exploration mission include the requirements for image recording of the surface of Mars, and the high-resolution camera on the surface of Mars equipped with the probe can achieve this goal. At the same time, in order to improve the quantitative description of the Martian surface information and increase the amount of surveying and mapping information, analyzing the image to obtain the positioning information of the Martian surface target in the image is of great significance to the science and engineering of the exploration mission. [0003] Compared with the positioning of image targets on the surface of the earth, the ...

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Problems solved by technology

[0003] Compared with the positioning of image targets on the surface of the earth, the targets on the surface of Mars are all non-cooperative targets, with limited prior information, and it is difficult to obtain target information benchmarks. Due to the existence of the time delay between the vehicle and the ground and the period of the orbit measurement, the period of determining the positioning information changes accordingly. In terms of measurement accuracy, it also raises the requirements for the performance of various measurement-related systems

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