论文部分内容阅读
为了便于空间激光通信中捕获、跟踪性能的测试,提出了一种卫星振动模拟源系统设计方案。该系统主要由上位机借助LabVIEW软件解析标准振动功率谱密度函数,将模拟出的平台振动信号传给以STM32F4为核心的控制系统,驱动振镜进行俯仰、方位摆动。借助欧空局设计的SILEX平台模型,推导验证了本方案的可行性,并搭建实验现场,通过探测器对光斑脱靶量进行了实时监测,分析了脱靶量功率谱,同时对在实际应用中产生的伪随机序列进行了优化与处理。实验结果表明,设计的振动源幅值精度优于2μrad,模拟结果真实有效。另外由于其频率可调节,模拟系统幅度可达±10mrad,故易于模拟不同的标准模型,为复合轴捕获、跟踪和瞄准(APT)的实验室验证提供了条件。
In order to facilitate the acquisition of space laser communications, tracking performance testing, a satellite vibration simulation source system design. The system mainly by the host computer with LabVIEW software to resolve the standard vibration power spectral density function, the simulated platform vibration signal to STM32F4 as the core of the control system, the drive galvanometer tilt, azimuth swing. Based on the SILEX platform model designed by ESA, the feasibility of this scheme was verified and verified. The experiment site was set up and the spot miss distance of the spot was monitored by the detector in real time. The off-target power spectrum was analyzed. At the same time, The pseudo-random sequence is optimized and processed. The experimental results show that the designed amplitude source vibration source accuracy better than 2μrad, the simulation results are true and effective. In addition, due to its adjustable frequency, the amplitude of the analog system can reach ± 10 mrad, so it is easy to simulate different standard models, which provides the conditions for laboratory verification of compound axis acquisition, tracking and aiming (APT).