System and method for optically measuring space detector take-off or landing process

Abstract

Provided are a system and method for optically measuring the space detector take-off or landing process. The system comprises a calibration module, an imaging module and a data processing module. Theimaging module images the take-off or landing process of a space detector to be measured and transmits an imaging result to the data processing module. The calibration module calibrates elements of interior orientation and exterior orientation of the imaging module and transmits the elements of interior orientation and exterior orientation to the data processing module. The data processing modulereceives the imaging result transmitted by the imaging module and receives the elements of interior orientation and exterior orientation. According to the imaging result and the elements of interior orientation and exterior orientation, motion parameters of the space detector to be measured in the take-off or landing process are calculated. By adopting a binocular pose measuring algorithm based oncontrol points, the physical quantities such as space position and poses in the take-off process of the space detector on the surface of an extraterrestrial celestial body are accurately measured, and motion parameters such as the speed, accelerated speed and angular spin rate of the space detector are obtained.

Description

technical field [0001] The invention belongs to the field of spacecraft remote sensing, and relates to an optical measurement system and method for a space probe during take-off or landing. Background technique [0002] In space missions, it is often necessary to accurately measure physical quantities such as the relative position, attitude, and velocity of moving objects in a large-scale scene. With the in-depth development of major special projects for deep space exploration, the safe take-off of space probes on the surface of extraterrestrial celestial bodies is an important part of space exploration engineering, and some physical quantities and motion parameters of space probes during take-off are measured. An important indicator of whether it is functioning properly. [0003] Traditional measurement methods are divided into contact measurement and non-contact measurement. Since the space probe does not allow access to additional measurement equipment, it can only choo...

AI Technical Summary

Problems solved by technology

[0005] Optical measurement methods are sensitive to ambient light, and the existing large-scale scene moving target parameter measurement technology cannot overcome the influence of light on measurement, resulting in poor imaging quality and reducing the accuracy of measurement results

[0006] The existing binocular pose measurement method cannot achieve synchronous image acquisition during large-scale outdoor ground tests, which indirectly affects the accuracy of the measurement results

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