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Recent developments in electronics have pushed miniaturised satellites to the femto-scale, with masses between 10 and 100 g. Although femtosatellites have been proven as a feasible concept, most designs are limited in mission capacity and lifetime due to the lack of environmental protection and onboard propellant. In this paper, a novel concept for femtosatellites for Earth remote sensing is proposed. In particular, a swarm of femtosatellites are used as elements of a sparse array in orbit to receive radar echoes. They also feature active orbit control enabled by solar radiation pressure to extend their lifetime. A simple active orbit control algorithm has been demonstrated. A mission concept based on a Sun-synchronous circular orbit is proposed to maximise the benefit for both Earth remote sensing and active orbit control. A synthetic aperture radar mission has been used to characterise their performance.
|IEEE Transactions on Aerospace and Electronic Systems
|Early online date
|7 Feb 2020
|E-pub ahead of print - 7 Feb 2020
- solar sailing
- relative motion
- Earth remote sensing
- bi-static synthetic aperture radar
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- 1 Finished
1/04/13 → 31/03/18