Solar cell probe calibration method for lunar dust measurement instrument

Abstract

The invention discloses a solar cell probe calibration method for a lunar dust measurement instrument. By using the solar cell probe calibration method, a solar cell probe can be calibrated on the ground; the method is simple and reliable and can provide basis for IOT (in orbit test) of the lunar dust measurement instrument. According to the solar cell probe calibration method, a solar cell shading effect principle is utilized and the solar cell probe is calibrated by establishing a ground calibration device, simulating sunlight irradiation and lunar dust deposition on the solar cell, measuring a relation between a short circuit current of the solar cell probe and a quantity of deposited lunar dust and testing influence of different sunlight incidence angles. By utilizing the calibration result, the lunar dust measurement instrument can calculate the quantity of the deposited lunar dust according to the sunlight incidence angle and the short circuit current of the solar cell probe in the testing process. The ground calibration device adopted by the invention has a simple structure and higher testing accuracy.

Description

technical field [0001] The invention relates to the technical field of space payload calibration, in particular to a method for calibrating a solar cell probe of a lunar dust measuring instrument. Background technique [0002] The lunar dust measuring instrument is an engineering parameter measurement device on the CE-3 lander of the second phase of the lunar exploration project. It has been launched to the surface of the moon and is working in orbit. The lunar dust measuring instrument includes two probes, a solar cell probe and a SQCM probe. The SQCM probe mainly measures the amount of lunar dust accumulated on the lunar surface for a long time, and monitors the change of the accumulated mass of lunar dust; the solar cell probe mainly measures the amount of lunar dust splashed when the lander lands on the lunar surface. It is the first time in China to use a solar cell probe to measure the amount of lunar dust splashed by a lander when it lands on the lunar surface. Inter...

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Problems solved by technology

It is the first time in China to use a solar cell probe to measure the amount of lunar dust splashed by a lander when it lands on the lunar surface. Internationally, it has been used in the Apollo moon landing, but there is no report on the relevant calibration method, so in the lunar dust There is no ready-made method for reference in the calibration of the solar cell probe of the measuring instrument

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