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Open-Loop Flight Testing of COBALT Navigation and Sensor Technologies for Precise Soft Landing

机译:COBALT导航和传感器技术的开环飞行测试,用于精确的软着陆

摘要

An open-loop flight test campaign of the NASA COBALT (CoOperative Blending of Autonomous Landing Technologies) payload was conducted onboard the Masten Xodiac suborbital rocket testbed. The payload integrates two complementary sensor technologies that together provide a spacecraft with knowledge during planetary descent and landing to precisely navigate and softly touchdown in close proximity to targeted surface locations. The two technologies are the Navigation Doppler Lidar (NDL), for high-precision velocity and range measurements, and the Lander Vision System (LVS) for map-relative state esti- mates. A specialized navigation filter running onboard COBALT fuses the NDL and LVS data in real time to produce a very precise Terrain Relative Navigation (TRN) solution that is suitable for future, autonomous planetary landing systems that require precise and soft landing capabilities. During the open-loop flight campaign, the COBALT payload acquired measurements and generated a precise navigation solution, but the Xodiac vehicle planned and executed its maneuvers based on an independent, GPS-based navigation solution. This minimized the risk to the vehicle during the integration and testing of the new navigation sensing technologies within the COBALT payload.
机译:在Masten Xodiac亚轨道火箭试验台上进行了NASA COBALT(自主着陆技术的合作混合)有效载荷的开环飞行试验。有效载荷整合了两种互补的传感器技术,这些技术共同为航天器提供了在行星下降和着陆期间的知识,从而可以在目标表面位置附近精确地导航并进行软着陆。两种技术分别是用于高精度速度和距离测量的导航多普勒激光雷达(NDL)和用于地图相对状态估计的Lander视觉系统(LVS)。运行在COBALT板上的专用导航过滤器可实时融合NDL和LVS数据,以生成非常精确的地形相对导航(TRN)解决方案,适用于需要精确和软着陆能力的未来自主行星式着陆系统。在开环飞行活动中,COBALT有效载荷获取了测量值并生成了精确的导航解决方案,但是Xodiac车辆基于独立的基于GPS的导航解决方案计划并执行了其机动动作。这将在COBALT有效载荷内集成和测试新的导航感应技术期间,将车辆的风险降至最低。

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