液晶与显示, 2011, 26 (3): 409, 网络出版: 2011-06-24
空间相机连续调焦地面仿真测试系统设计
Design of Simulation and Detection System for Space Camera Continuous Focus Adjustment System
摘要
为使空间相机获得清晰准确的地面目标图像,相机需要依据结构变化对焦面位置进行调整。如果空间相机可以在轨快速对目标景物连续调焦,通过地面下传图像准确判断出最优焦面位置,将会极大提高空间相机的工作质量和效率。为验证连续调焦方法的可行性,提出了一种地面仿真测试方法。采用动态目标发生器和平行光管模拟相机在轨对地面目标成像。应用计算机系统作为目标发生器远程控制、数据处理、信息发送和接收设备,空间相机实时接收飞行器模拟设备发送的命令和工程参数,完成模拟在轨连续调焦。试验结果表明,所设计的系统能够依据图像判断最优焦面位置,满足设计和测试要求。
Abstract
In order to acquire the clear and exact image of the ground object, the focus position of space camera should be adjusted according to the variety of the mechanism. If the focus of the camera can be adjusted continuously in the orbit, and the optimal focus can be exactly acquired from the photos transmitted to the ground, the quality and efficiency of the space camera will be greatly improved. In order to validate the continuous focus adjustment method, a simulation and detection method is proposed. A dynamic aim generator and a collimator are applied to simulating the ground object. The computer system is used to control the dynamic aim generator, accomplish the data processing, transmit and receive the data information. The command and parameter transmitted by the simulation devices are received by the space camera at the real time, then the photos are taken and the focus is adjusted continuously and simultaneously.The experiment results show that the optimal focus can be acquired and the detective method satisfies the test requirement.
曹小涛, 徐抒岩, 赵运隆. 空间相机连续调焦地面仿真测试系统设计[J]. 液晶与显示, 2011, 26(3): 409. CAO Xiao-tao, XU Shu-yan, ZHAO Yun-long. Design of Simulation and Detection System for Space Camera Continuous Focus Adjustment System[J]. Chinese Journal of Liquid Crystals and Displays, 2011, 26(3): 409.