MSMISat – New generation micro-satellite

Paper number

IAC-05-B5.4.04

Author

Prof. Sias Mostert, University of Stellenbosch, South Africa

Year

2005

Abstract

The Multi-sensor Micro-Satellite Imager (MSMI) is a new generation imager combining high resolution imaging with hyper-spectral imaging in the same optical bench.  The MSMI represents a unique high value micro-satellite payload and as such the satellite bus to support the payload needs to ensure the maximum utility from the instrument.

The challenge is to maximise the utilisation capacity of the MSMI instrument in order that it can be applied for operational data set production.  In particular the MSMI has been designed for easy integration into different spacecraft buses.

Other solutions for multiple payloads have traditionally focussed on a large platform with many instruments, necessitating scheduling the use between the instruments.  At the other extreme single payload missions are also attractive in order to minimise cost.  The challenge is thus to maximise the use of the hyperspectral payload in combination with the high resolution panchromatic and multi-spectral payloads.

Increasing the utility starts with a high performance satellite bus, which is the topic of this paper.  The increase in utility through the use of the payload in the ARM constellation has already been described.  

The single instrument solution lies in a high performance micro-satellite bus that enables the maximum utilisation of the MSMI payload through ADCS and on-board storage, power and downlink capability..  Further more, a clear indication of the available capacity for additional medium resolution payloads provide information on the full utilisation possible with the SunSpace180 micro-satellite bus.

The paper will start with the sample application that is developed in conjunction with the MSMI imager as a baseline requirement.  This is followed by a mission analysis covering the envelope of operational conditions expected of the satellite.  The satellite design solution is then presented with trade-offs on the key system elements that are possible. The paper is concluded with a summary of the operational scope of an MSMI mission.

Abstract document

IAC-05-B5.4.04.pdf

Manuscript document

IAC-05-B5.4.04.pdf (🔒 authorized access only).

To get the manuscript, please contact IAF Secretariat.