Concept of multilevel adaptation of integrated navigation systems of small spacecraft

The concept of constructing an adaptive on-board information and measuring complex of small spacecraft is discussed in the paper. The developed concept of multilevel adaptation of integrated navigation systems of small spacecraft provides the required accuracy and survivability in conditions of influencing factors and emergency situations. Lack of clearly defined information-measuring core inherent in modern integrated navigation systems of different moving objects is a distinctive feature of the proposed concept. Basic information of a navigation system with respect to which correction of other systems is supposed to be carried out is formed in accordance with the situation determined by the level of disturbances and failures taking place, as well as modes of operation of small spacecraft. The concept involves three levels: parametric, information and structural adaptation. The parametric level assumes automatic tuning of the parameters of measuring system sensors to ensure the best mode of operation in terms of accuracy. The information level of adaptation provides the required accuracy of determining the parameters of orientation and navigation through the implementation of an adaptive method of complex processing of navigational information. The structural layer provides the system’s self-organization that consists in providing the control of modes of operation of measuring equipment and information resources to ensure the integrity of navigation information in a contingency situation. Methods of system analysis were used in developing the concept of multi-level adaptation of an adaptive on-board information and measuring complex of small spacecraft.