Light spot positioning system

Through the MIPI interface protocol and adaptive threshold centroid positioning algorithm, combined with Xilinx's MPSoC, high-precision spot positioning of the spot positioning system is achieved, which solves the problem of unstable spot positioning in space optical communication and improves the stability of the communication link and signal quality.

CN120702328APending Publication Date: 2025-09-26INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202410354637.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-03-26
Publication Date
2025-09-26

AI Technical Summary

Technical Problem

In space optical communications, it is difficult for the spot positioning algorithm to achieve high-precision spot positioning, resulting in unstable communication links and signal attenuation. In particular, it is difficult to track and adjust the spot position in real time in complex space environments.

Method used

The MIPI interface protocol is used to transmit image data, and the double-rate synchronous dynamic random access memory and the adaptive threshold centroid positioning algorithm are combined to realize the spot positioning calculation. The Xilinx MPSoC is used as the computing core to complete the real-time acquisition, processing and display of image data.

Benefits of technology

It achieves sub-pixel positioning accuracy of the light spot, improves the stability and signal quality of the communication link, supports adaptive modulation technology, and enhances the anti-interference ability and real-time tracking performance of the communication system.

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Abstract

The invention provides a light spot positioning system, and the system comprises an image data input logic module which is connected with an image sensor and is used for receiving image data collected by the image sensor; the double-rate synchronous dynamic random access memory is connected with the image data input and output logic module and is used for storing the image data; the light spot positioning module is connected with the double-rate synchronous dynamic random access memory and is used for reading the image data to carry out light spot positioning calculation; the image data input and output logic module, the double-rate synchronous dynamic random access memory and the light spot positioning module are constituent parts of the MPSoC. According to the light spot positioning system, an MPSoC of Xilinx serves as a calculation core, data are temporarily stored in a double-rate synchronous dynamic random access memory according to the time sequence requirement to achieve a frame caching function, meanwhile, the data are transmitted to a positioning module in real time for calculation, and a positioning result can be rapidly obtained.
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