相干检测星间跟踪技术方案的优化设计  

Optimization of Coherent Detection Technology for Inter-satellite Tracking

作　　者：潘湖迪[1] 金韬[1] 

机构地区：[1]浙江大学信息与电子工程学系,杭州310027

出　　处：《光子学报》2005年第5期694-696,共3页Acta Photonica Sinica

基　　金：国家自然科学基金资助(项目批准号 60307005)

摘　　要：采用高斯光束近似重构了相干检测星间跟踪技术方案的数学模型,计算分析了探测器输出的中频电流与光束失配角之间的关系,减小了以往平面波近似下的计算误差 同时通过优化选择探测器直径和光束直径之比,对输出中频电流表达式进行了简化,提高了运算效率。The mathematical model of coherent detection for inter-satellite tracking is rebuilt under Gaussian approximation. The intermediate frequency current from a detector as a function of a beam mismatched angle is calculated under this model which can get a smaller error compared with the one under plate wave approximation. The expression of the intermediate frequency current is simplified by choosing a right ratio between the detector diameter and the beam diameter, which can improve the calculation efficiency.

关 键 词：星间光通信 相干检测 高斯光束 

分 类 号：TN929.14[电子电信—通信与信息系统] O743.1[电子电信—信息与通信工程]