Data from mobile and stationary sensors will be vital in planetary surface exploration. The distribution and collection of sensor data in an ad-hoc wireless network presents unique challenges. Some of the conditions encountered in the field include: irregular terrain, mobile nodes, routing loops from clients associating with the wrong access point or repeater, network routing reconfigurations caused by moving repeaters, signal fade, and hardware failures. These conditions present the following problems: data errors, out of sequence packets, duplicate packets, and drop out periods (when the node is not connected). To mitigate the effects of these impairments, robust and reliable software architecture tolerant of communications outages must be implemented. This paper describes such a robust and reliable software infrastructure that meets the challenges of a distributed ad hoc network in a difficult environment and presents the results of actual field experiments testing the principles and exploring the underlying technology.


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    Title :

    Software architecture of sensor data distribution in planetary exploration


    Contributors:
    Lee, C. (author) / Alena, R.L. (author) / Stone, T. (author) / Ossenfort, J. (author) / Walker, E. (author) / Notario, H. (author)

    Published in:

    Publication date :

    2006-01-01


    Size :

    1533878 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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