中国激光, 2017, 44 (11): 1106005, 网络出版: 2017-11-17
空间激光通信中四象限光电探测器环形光斑检测及误差补偿 下载: 904次
Annular Facula Detection and Error Compensation of Four-Quadrant Photoelectric Detector in Space Laser Communication
图 & 表
图 3. 能量呈高斯分布的光斑模型。 (a)完整圆形光斑;(b)环形光斑
Fig. 3. Models of facula with Gaussian distribution energy. (a) Complete circular facula; (b) annular facula
图 4. APT系统结构示意图。(a)精跟踪光束对准检测系统;(b)光束横向漂移;(c)光束与接收天线视轴夹角误差
Fig. 4. Structural schematic of APT system. (a) Beam alignment detection system for fine tracking; (b) beam transverse drift; (c) angle error of beam and receiving antenna boresight
图 5. (a)环形光斑检测示意图;(b) (0.14,0)处的x解算值分布图
Fig. 5. (a) Schematic of annular facula detection; (b) distribution of calculated values of x at (0.14, 0)
图 6. QD环形光斑能量分布图。 (a)光束已对准;(b) 0Fig. 6. Annular facula energy distributions of QD. (a) Beam has been aligned; (b) 0
Fig. 6. Annular facula energy distributions of QD. (a) Beam has been aligned; (b) 0
图 7. 环形光斑与完整光斑算法的误差分析。(a) X轴输出结果与实际光斑位置;(b)检测灵敏度
Fig. 7. Error analysis of annular facula and complete facula algorithms. (a) X-axis output results and position of actual facula; (b) detection sensitivity
图 8. Rd=1 mm时目标光斑偏移量x随光斑中心坐标X'的变化
Fig. 8. Variation in target facula offset x with facula center coordinate X' when Rd=1 mm
图 9. Rx=0.3 mm时目标光斑偏移量x随光斑中心坐标X'的变化
Fig. 9. Variation in target facula offset x with facula center coordinate X' when Rx=0.3 mm
图 10. 补偿算法示意图。 (a)补偿值;(b)补偿角度误差
Fig. 10. Schematic of compensation algorithm. (a) Compensation value; (b) compensation of angle error
图 12. 光斑搜索过程示意图。(a)螺旋扫描路径图;(b)扫描过程输出数据图
Fig. 12. Schematic of facula search process. (a) Path of helical scanning; (b) output data of scanning process
图 13. 遮光比确定时目标光斑偏移量x随光斑中心坐标X'变化的实测数据图
Fig. 13. Measured data of variation in target facula offset x with facula center coordinate X' when shading ratio is determined
表 1环形光斑误差值补偿过程计算
Table1. Compensation process calculation of annular facula error value
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表 2环形光斑偏移量补偿值e
Table2. Offset compensation value e of annular facula
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李生民, 张圆清. 空间激光通信中四象限光电探测器环形光斑检测及误差补偿[J]. 中国激光, 2017, 44(11): 1106005. Li Shengmin, Zhang Yuanqing. Annular Facula Detection and Error Compensation of Four-Quadrant Photoelectric Detector in Space Laser Communication[J]. Chinese Journal of Lasers, 2017, 44(11): 1106005.