Orbit Determination and Differential-drag Control of Planet Labs Cubesat Constellations

Abstract

We present methodology and mission results from orbit determination of Planet Labs nanosatellites and differential-drag control of their relative motion. Orbit determination (OD) is required on Planet Labs satellites to accurately predict the positioning of satellites during downlink passes and we present a scalable OD solution for large fleets of small satellites utilizing two-way ranging. In the second part of this paper, we present mission results from relative motion differential-drag control of a constellation of satellites deployed in the same orbit.

13 pages, 9 figures. Presented at AIAA Astrodynamics Specialist Conference in Vale, CO, August 2015

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