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Embedded satellite laser ranging control system

A satellite laser ranging and control system technology, applied in radio wave measurement systems, measurement devices, electromagnetic wave re-radiation and other directions, can solve the problems of complex ranging methods, low control accuracy, slow response speed, etc., to improve processing capacity and the effect of flexibility in algorithm design

Active Publication Date: 2017-08-04
中国科学院国家天文台长春人造卫星观测站
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Problems solved by technology

[0008] The present invention provides an embedded satellite laser ranging method to solve the problems that the existing satellite laser ranging control technology is realized by the main control computer, the ranging method is complicated, the response speed is slow, data is lost, etc., and the control accuracy is low. Control System

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  • Embedded satellite laser ranging control system
  • Embedded satellite laser ranging control system
  • Embedded satellite laser ranging control system

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specific Embodiment approach 1

[0042] Specific implementation mode 1. Combination Figure 1 to Figure 4 In this embodiment, the embedded satellite laser ranging control system includes a telescope tracking controller, a range gate controller and a laser beam pointing controller. The telescope tracking controller, the range gate controller and the laser beam pointing controller are respectively composed of DSP and FPGA, and the DSP and FPGA carry out data communication through the SRIO protocol;

[0043] The telescope tracking controller reads the current observation time, and calculates the azimuth and altitude position of the observation target at the current time according to the orbit forecast interpolation of the station, and then outputs to the servo system of the motor to control the operation of the telescope, so that the telescope can accurately point to the target.

[0044] The range gate controller first outputs the ignition signal of the laser according to the ranging frequency, then latches the ...

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Abstract

The invention relates to an embedded satellite laser ranging control system, and solves problems that the satellite laser ranging control technology implemented through a main control computer is complex in ranging method, is low response speed and causes the data loss. A telescope tracking controller reads a current observation moment, calculates the azimuth and height position at the current moment through orbit prediction interpolating of an observation station, and outputs the azimuth and height position to a servo system of a motor. A distance gate controller outputs an igniting signal of a laser according to a distance measuring frequency, locks a main wave signal, and calculates the moment when a distance gate signal corresponding to a main wave is generated. A gate control signal is outputted through the distance gate controller. A laser beam direction controller recognizes a light beam image, obtains a light peak position, calculates the deviation between the light peak point and the center of a receiving visual field, and corrects the direction deviation of a laser beam through a control algorithm. The system can meet the demands of higher-repetition-frequency laser ranging through employing an FPGA+DSP heterogeneous processor configuration, and facilitates the upgrading of the whole ranging system.

Description

technical field [0001] The invention relates to an embedded satellite laser ranging control system. Background technique [0002] Satellite laser ranging technology is one of the main means of high-precision satellite precise positioning observation at present, and it is the one with the highest single-point sampling accuracy among various modern positioning observation means. The gravitational field and the gravitational constant play an important role in determining the laws of the earth and ocean tide changes. [0003] High repetition rate satellite laser ranging has the advantages of fast target acquisition, large amount of observation data, high ranging accuracy and high standard point data density, and has become the development trend of international laser ranging technology. Among nearly 50 laser ranging stations in the world, only a few artificial satellite observation stations have realized kilohertz laser satellite ranging or related experiments. Generally speak...

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Application Information

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IPC IPC(8): G01S17/08G01S7/48
CPCG01S7/4802G01S17/08
Inventor 杨文波刘承志李振伟范存波张楠吕游
Owner 中国科学院国家天文台长春人造卫星观测站
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