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Code-type sun sensor error modeling and calibration method

A technology of a solar sensor and a calibration method is applied in the field of error modeling and calibration of a coded solar sensor to achieve the effect of improving measurement accuracy

Inactive Publication Date: 2013-06-12
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

The measurement accuracy of the existing coded sun sensor will not be able to meet this new requirement. Therefore, an error modeling and calibration method for the coded sun sensor is urgently needed to improve the measurement accuracy and adapt to the development of spacecraft technology. develop

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  • Code-type sun sensor error modeling and calibration method
  • Code-type sun sensor error modeling and calibration method
  • Code-type sun sensor error modeling and calibration method

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Embodiment Construction

[0029] The invention provides an error modeling and calibration method for an encoded solar sensor, such as figure 2 As shown, the method includes:

[0030] Step 1: Analyze the error factors of the coded solar sensor and establish the error compensation model of the coded solar sensor;

[0031] Step 2: Use the calibration system to calibrate the model parameters in the error compensation model.

[0032] Such as Figure 4 As shown, further, step 1 includes:

[0033] Step 10: According to the coded sun sensor's fine code signal processing method, establish the coded sun sensor's fine code signal processing algorithm error model;

[0034] Step 11: Establish a structural error model of the coded solar sensor according to the imaging process and structural composition characteristics of the coded solar sensor;

[0035] Step 12: Combine the error model of the fine code signal processing algorithm and the structural error model of the coded sun sensor to establish an error compensation model f...

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Abstract

The invention discloses a code-type sun sensor error modeling and calibration method. The method includes the steps of carrying out analysis on error factors of a code-type sun sensor, building a code-type sun sensor error compensation model which contains fine code signal processing algorithm errors and structural errors, and utilizing a calibration system to carry out calibration on model parameters in the error compensation model. Through adoption of the code-type sun sensor error modeling and calibration method, the measuring accuracy of the code-type sun sensor can be effectively improved.

Description

Technical field [0001] The invention relates to the field of solar sensor measurement, in particular to an error modeling and calibration method for an encoded solar sensor. Background technique [0002] The Sun Sensor is a type of optical sensor widely used in the aerospace field. It measures the attitude of the spacecraft by measuring the sunlight vector. [0003] At present, sun sensors are mainly divided into four types: "0-1" sun sensor, analog sun sensor, coded sun sensor and imaging sun sensor; among them, the coded sun sensor has reliable structure , The technology is mature and has been successfully applied to most of our satellites. [0004] The coded sun sensor is mainly composed of an optical probe and a signal processing circuit; among them, the optical probe is generally composed of an optical glass component (such as a semi-cylindrical mirror 12) engraved with an incident slit, an encoding code disc 13 and an integrated photocell (such as 14) composition of silicon p...

Claims

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Application Information

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IPC IPC(8): G01C25/00
Inventor 樊巧云张广军魏新国李健莫亚男崔坚陈然
Owner BEIHANG UNIV