基于中间节点预测的卫星光通信精确跟踪控制系统设计

针对现有卫星光通信跟踪控制系统存在光通信信号数据分割误差大,跟踪控制精度降低的问题,提出基于中间节点预测的卫星光通信精确跟踪控制系统设计;采用DPS嵌入式技术构建基于中间节点预测数据处理的硬件平台,利用MCU作为中间节点预测数据的指挥调度单元;将CDD光学传感器应用于光通信光谱信号特征采集单元;通过STM32F103RBT6主控对CDD光学传感器的高精度光通信光谱特征信号处理;通过73M2901CE-IGV/F跟踪信号精度调制IC完成对高精度跟踪信号的控制调节;对设计系统控制精度的多场景进行测试;数据表明,设计系统能够支持光通信信号强度大于32％小于50％的条件下,保持通信跟踪控制指标为0.92,最大化接近标准指标量1,在600个测试数据量下,所设计系统的检测耗时为1.2s,说明所设计跟踪控制的精度较高,控制耗时较短,满足光通信实际跟踪控制系统的应用要求.

Design of accurate tracking control system for satellite optical communication based on intermediate node prediction

Aiming at the problems of the existing satellite optical communication tracking control system that the optical communication signal data segmentation error is large and the tracking control accuracy is reduced, a satellite optical communication accurate tracking control system design based on intermediate node prediction is proposed. Use DPS embedded technology to build a hardware platform based on intermediate node prediction data processing, use MCU as the command and dispatch unit of intermediate node prediction data; apply CDD optical sensor to optical communication spectral signal feature acquisition unit. Through the STM32F103RBT6 master control, the high-precision optical communication spectral characteristic signal processing of the CDD optical sensor; through the 73M2901CE-IGV/F tracking signal precision modulation IC to complete the control and adjustment of the high-precision tracking signal. Test the control accuracy of the design system in multiple scenarios. The data shows that the designed system can support the optical communication signal strength greater than 32% and less than 50%, maintaining the communication tracking control index of 0.92, maximizing close to the standard index 1. Under the condition of 600 test data, the designed system''s detection The time-consuming is 1.2s, which shows that the designed tracking control has higher precision and shorter control time, which meets the application requirements of the actual tracking control system for optical communication.