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Formation Flying Radio-Frequency metrology validation and performance: The PRISMA case

机译：编队飞行无线电频率计量学的验证和性能：PRISMA案例

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The Radio-Frequency (RF) metrology sub-system developed by Thales Alenia Space~? under contract from French (CNES) and Spanish (CDT1) space agencies provides autonomous relative positioning for high-altitude formation flying missions, where Global Navigation Satellite System (GNSS) services are not available. The RF sub-system basically provides navigation products such as relative distance, Line-of-Sight (LoS) and velocity estimates over a wide relative distance range starting from three meters and up to 30 km. It allows full-space coverage thanks to multiple antennae and offers an Inter-Satellite communication Link (ISL) featuring a 12 kbps throughput. The first two Flight Model (FM) units have been delivered at the end of 2009 in the framework of PRISMA flight demonstration mission. Thales Alenia Space~? performed the integration and validation of the units in the conductive mode, covering functional and performance aspects. A complementary validation phase was achieved by CNES in radiated conditions, including multi-path and antennae phase center characterization in anechoic chamber.
机译：Thales Alenia Space〜？开发的射频（RF）度量子系统。根据法国（CNES）和西班牙（CDT1）的合同，航天局为没有全球导航卫星系统（GNSS）服务的高空编队飞行任务提供了自主的相对位置。射频子系统基本上提供了导航产品，例如相对距离，视线（LoS）和在从三米到30 km的较宽相对距离范围内的速度估计。由于有多个天线，它可以实现全空间覆盖，并提供了12 kbps吞吐量的卫星间通信链路（ISL）。前两个飞行模型（FM）单元已在PRISMA飞行演示任务的框架下于2009年底交付。 Thales Alenia Space〜？以导电模式执行了单元的集成和验证，涵盖了功能和性能方面。 CNES在辐射条件下完成了一个补充验证阶段，包括在消声室内进行多径和天线相位中心表征。

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