Lunar rover sailboard power attenuation determination method and device based on sparse telemetry

Abstract

The invention discloses a lunar rover sailboard power attenuation determination method and device based on sparse telemetry, and the method comprises the steps: obtaining the solar incident angle andoutput current of a lunar rover sailboard; extracting each current stratification value and a corresponding characteristic incident angle of the output current of the lunar vehicle sailboard; normalizing each current stratification value according to the month-day distance and the sun incident angle; determining a relation curve between the lunar vehicle sailboard output current and the solar incident angle during the day of each month according to each current stratification value after normalization processing and the corresponding characteristic incident angle, and further extracting the output current of the lunar vehicle sailboard under the same solar incident angle during the day of each month; fitting a power attenuation curve of the lunar rover sailboard output power under different solar incident angles; and determining the attenuation rate of the lunar rover sailboard output power according to the power attenuation curve obtained by fitting. According to the method, the attenuation condition of the output power of the lunar rover sailboard can be accurately predicted.

Description

technical field [0001] The invention relates to the field of lunar exploration, in particular to a method and device for determining the power attenuation of a lunar rover sailboard based on sparse telemetry. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] The solar sail is one of the important components of the lunar rover, which can convert solar energy into electrical energy and provide electrical support for the exploration work of the lunar rover. The attenuation of the output power of the solar panels on the lunar rover may affect the normal operation of the lunar rover. Therefore, accurate prediction of the attenuation of the output power of the solar panels is of great significance for astronauts to grasp the performance status and health characteristics of the lunar ...

AI Technical Summary

Problems solved by technology

[0005] In the embodiment of the present invention, a method for determining the power attenuation of the solar sail panel based on sparse telemetry is provided to solve the problem that the prior art cannot accurately predict the attenuation of the output power of the solar sail panel, which may affect the normal operation of the lunar rover According to the technical problem, the method includes: obtaining sparse telemetry data, wherein the sparse telemetry data includes: the solar incidence angle and output current of the sail panel of the lunar rover; extracting each current layered value of the output current of the sail panel of the lunar rover according to the sparse telemetry data and the corresponding characteristic angle of incidence; according to the distance between the moon and the sun and the angle of incidence of the sun, each current layered value is normalized; according to each current layered value after normalization and the corresponding characteristic angle of incidence, determine the previous month The relationship curve between the output current of the lunar rover's sailboard and the incident angle of the sun during the daytime; according to the relationship curve between the output current of the sailboard of the lunar rover and the incident angle of the sun during the previous moon and day, extract the current of the lunar rover's sailboard under the same sun's incident angle during the previous moon and day. Output current, fit the power attenuation curve of the output power of the lunar rover sailboard under different sun incidence angles; determine the attenuation rate of the lunar rover sailboard output power according to the power attenuation curve of the lunar rover sailboard output power under different sun incidence angles

[0006] The embodiment of the present invention also provides a device for determining the power attenuation of the solar sail panel based on sparse telemetry, which is used to solve the problem that the existing technology cannot accurately predict the attenuation of the output power of the solar sail panel, which may affect the normal operation of the lunar rover. The technical problem of the work, the device includes: a sparse telemetry data acquisition module, used to acquire sparse telemetry data, wherein the sparse telemetry data includes: solar incidence angle and output current of the lunar rover sail panel; current stratification value and characteristic incidence angle determination The module is used to extract the current layered values ​​and the corresponding characteristic incident angles of the lunar rover sailboard output current according to the sparse telemetry data; The layer value is normalized; the module for determining the relationship between the output current and the sun’s incident angle is used to determine the output current of the lunar rover’s sailboard during the previous lunar and day periods according to the normalized current layered values ​​and the corresponding characteristic incident angles. The relationship curve with the solar incidence angle; the power attenuation curve fitting module is used to extract the lunar rover sail panel under the same solar incidence angle during the previous lunar day period according to the relationship curve between the output current of the lunar vehicle sail panel and the solar incident angle during the previous lunar day period The output current of the lunar rover's sailboard under different incident angles of the sun is used to fit the power attenuation curve of the output power of the sailboard of the lunar rover; the output power attenuation rate determination module is used to determine the Attenuation rate of the output power of the sailboard of the lunar rover

[0007] In the embodiment of the present invention, a computer device is also provided to solve the technical problem that the existing technology cannot accurately predict the attenuation of the output power of the solar panel, which may affect the normal operation of the lunar rover. The computer device includes a memory , a processor and a computer program stored on the memory and operable on the processor, when the processor executes the computer program, the method for determining the power attenuation of the sailboard of the lunar rover based on sparse telemetry is realized

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