Spacecraft Angular Rate Estimation via Event-Based Camera Sensing
Vittorio Franzese and Matteo El Hariry
本文介绍了一种使用基于事件的相机传感来确定航天器角速率的方法。 这是通过分析由恒星的明显运动触发的亮度事件的时间分布来实现的。 事件的位置和极性用于推断恒星的明显运动场,这反过来又用于估计相机帧中的观察者角速度。 这可能会转换为航天器的角速率,提供姿态参考。 该方法通过数值模拟对随机航天器指向和速率条件上生成的事件流的合成数据集进行验证。 评估该方法的准确性,证明其使用事件相机传感在航天器系统中补充或替换传统速率传感器的潜力。
This paper presents a method for determining spacecraft angular rates using event-based camera sensing. This is achieved by analyzing the temporal distribution of brightness events triggered by the apparent motion of stars. The location and polarity of the events are used to infer the apparent motion field of the stars, which is, in turn, employed to estimate the observer angular velocity in the camera frame. This can be converted to the spacecraft angular rates provided an attitude reference. T...
