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Fine Beacon Pointing Control System for the RILC (Recce/Intel Laser Crosslink) System

机译：RILC（Recce / Intel激光交联）系统的精细信标指向控制系统

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摘要

Airborne laser communication systems often require a control system for each transceiver providing pointing control of a reference line of sight aboard a stabilized platform. These control systems often apply target in the loop techniques using a fast steering mirror (FSM) that reflects the incoming beacon image towards a 2 axis optical sensor. Sensor measurements and processing provide estimates of the beacon image centroid in a feedback control system with the FSM to center the image against disturbing influences. These disturbances appear as exogenous inputs in the control loop and are derived from both 1) atmospheric turbulence, which distorts the shape and direction of the beacon image, and 2) residual vibrations, which originate in the aircraft structure, and are attenuated by the stabilized platform. Models for both turbulence and structurally induced vibrations are described and applied in simulation with an FSM control system for an air-to-air laser communications system developed by Trex Enterprises for the Air Force Research Laboratory, WPAFB. Results from the simulation estimate obtainable bandwidth, stability margins and expected disturbance reduction. Simulation results are compared to actual performance measurements.
机译：机载激光通信系统通常需要为每个收发器提供一个控制系统，以在稳定平台上对参考视线进行指向控制。这些控制系统通常使用快速转向镜（FSM）在循环技术中应用目标，该转向镜将入射的信标图像朝2轴光学传感器反射。传感器的测量和处理可在带有FSM的反馈控制系统中提供信标图像质心的估计值，以使图像居中免受干扰影响。这些干扰作为控制回路中的外来输入出现，并且源于以下两个方面：1）大气湍流，它使信标图像的形状和方向失真，以及2）残余振动，这些残余振动源自飞机结构，并由稳定器衰减。平台。描述了湍流模型和结构引起的振动模型，并将其应用于由Trex Enterprises为WPAFB空军研究部开发的空对空激光通信系统的FSM控制系统进行仿真。仿真结果估计可获得的带宽，稳定性裕度和预期的干扰减少量。将仿真结果与实际性能测量结果进行比较。

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