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Method for satellite control system to obtain star sensor data generation time

A technology of satellite control system and star sensor, which is applied in the field of satellite control system, and can solve the problems such as out-of-synchronization of the synchronization function of Samsung sensors

Active Publication Date: 2014-01-01
BEIJING INST OF CONTROL ENG
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AI Technical Summary

Problems solved by technology

Previously, the generation time of the star sensor data was only obtained through theoretical calculations. After binding according to this data, there are a lot of out-of-sync phenomena in the synchronization function of the Samsung sensor in the control system.

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  • Method for satellite control system to obtain star sensor data generation time
  • Method for satellite control system to obtain star sensor data generation time

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Embodiment Construction

[0019] Introduce in detail the realization process of the present invention below in conjunction with accompanying drawing, satellite control system obtains the method for star sensor data generation time, this method uses the central control unit of satellite control system and star sensor and static star simulator thereof, relies on existing The star service and GPS information flow simulation computer sends the GPS second pulse output by it to the central control unit as the synchronous pulse signal of the star sensor. The method steps are as follows:

[0020] (1) According to figure 2 As shown, connect the star sensor with the signal terminal of the central control unit AOCC, and install a static star simulator on the star sensor. Connect the central control unit AOCC with the GPS second pulse signal and telemetry signal terminals of the star mission and GPS information flow simulation computer. And unfold the GPS second pulse signal sent by the satellite affairs and GP...

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Abstract

A method for a satellite control system to obtain a star sensor data generation time comprises the following steps: expanding GPS second pulse signals emitted by a satellite and a GPS information flow simulation computer in the ground equipment of the satellite control system by using an expansion box, carrying out static satellite model power-up of a star sensor for obtaining the data generation time, accessing to the central control unit of the control system, and powering up the central control unit; sending GPS second pulses to the star sensor through the central control unit as a synchronous signal; observing the remote measurement to obtain the exposure time and attitude quaternion output by the star sensor; slowly moving the GPS second pulses, and observing that whether the data change or not; recording the present phase of the GPS second pulses if the data change; and recording the change between the GPS second pulses and seven recorded phases if the data do not change. The method allows the star sensor exposure time to be obtained through ground tests.

Description

technical field [0001] The invention relates to a method for a satellite control system to obtain the data generation time of a star sensor, which is suitable for the satellite control system. Background technique [0002] The Tianhui-1 satellite control system needs to have the function of Samsung-sensitivity synchronization, and this function needs to obtain the actual measurement data of the generation time of the star sensor data. The star sensor completes its attitude output through exposure, and its exposure frequency is 8 times per second. After the star sensor is exposed, a star map is generated, and then a series of processing such as photoelectric conversion is performed to finally determine the three-axis attitude of the spacecraft in the inertial coordinate system. The data generation time of the star sensor is the sum of a series of process times from the beginning of its exposure to the generation of the four elements of attitude. Previously, the generation t...

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Application Information

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IPC IPC(8): G01C21/02
CPCG04F10/04G04F10/06G04R20/02
Inventor 李浛张琰韩璐钟时董筠张屹峰李亚强关彬李敬博马楠李岩陶志刚
Owner BEIJING INST OF CONTROL ENG
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