Future exploration strategies plan to land both human and robotics landers in scientifically interesting zones, located prior to the mission, which often consist in inherently hazardous craterized and erosion-modeled landscapes. Because of interplanetary and reentry navigation errors, the position of the lander is not known precisely enough to guarantee a landing close to a scientific site. Thus, a geo-localized absolute navigation is added to enable the lander to assess its position with regards to these sites in real time during descent. Meanwhile, a hazard avoidance function determines the best landing site by taking into account various criteria: risks, slope, scientific interest, propellant needed, guidance constraints, Sun and Earth visibility etc. This paper will focus on geo-localized absolute navigation principles and on the development of a dynamic and adaptable multicriteria decision algorithm with a non-exhaustive search methodology to cope with stringent computational requirements.
|Number of pages||10|
|Publication status||Published - Jul 2009|
|Event||3rd European Conference for Aero-Space Sciences - Versailles, France|
Duration: 6 Jul 2009 → 9 Jul 2009
|Conference||3rd European Conference for Aero-Space Sciences|
|Abbreviated title||EUCASS 2009|
|Period||6/07/09 → 9/07/09|