Title :
Fault Tolerant and Adaptive GPS Attitude Determination System
Author :
Morales-Reyes, Alicia ; Haridas, Nakul ; Erdogan, Ahmet T. ; Arslan, Tughrul
Author_Institution :
Sch. of Eng. & Electron., Univ. of Edinburgh, Edinburgh
Abstract :
In this paper a fault tolerant platform for the GPS attitude determination is proposed. The algorithm encompasses speed, adaptability and performance as its key objectives and also deals with single hard errors (SHE) from the fault tolerance perspective. The technique is based on the ambiguity function method (AFM) but overcomes restrictions and computational overheads incurred by existing techniques such as AFM. The adaptation of the GPS architecture is done by using fine-grained or cellular parallel genetic algorithm to compute more efficiently the attitude parameters in terms of speed and performance. The algorithm also has the ability to efficiently search the complex search space imposed by the problem in addition to being immune to cycle slips compared to other conventional methods.
Keywords :
Global Positioning System; fault tolerance; genetic algorithms; search problems; Global Positioning System; adaptive GPS; ambiguity function method; attitude determination system; cellular parallel genetic algorithm; fault tolerant platform; fine-grained genetic algorithm; search method; single hard errors; Costs; Evolutionary computation; Fault tolerance; Fault tolerant systems; Genetic algorithms; Global Positioning System; Hardware; Navigation; Position measurement; Space technology;
Conference_Titel :
Aerospace conference, 2009 IEEE
Conference_Location :
Big Sky, MT
Print_ISBN :
978-1-4244-2621-8
Electronic_ISBN :
978-1-4244-2622-5
DOI :
10.1109/AERO.2009.4839532