Journal of Systems Engineering and Electronics ›› 2011, Vol. 22 ›› Issue (6): 926-932.doi: 10.3969/j.issn.1004-4132.2011.06.008

• SYSTEMS ENGINEERING • Previous Articles     Next Articles

Information gain based sensor search scheduling for low-earth orbit constellation estimation

Bo Wang1,2,*, Jun Li1, Wei An1, and Yiyu Zhou1   

  1. 1. School of Electronics and Engineering, National University of Defense Technology, Changsha 410073, P. R. China;
    2. Institute of Radar and Electronic Warfare, Equipment Academy of Air Force, Beijing 100085, P. R. China
  • Online:2011-12-21 Published:2010-01-03


This paper addresses the problem of sensor search scheduling in the complicated space environment faced by the low-earth orbit constellation. Several search scheduling methods based on the commonly used information gain are compared via simulations first. Then a novel search scheduling method in the scenarios of uncertainty observation is proposed based on the global Shannon information gain and beta density based uncertainty model. Simulation results indicate that the beta density model serves a good option for solving the problem of target acquisition in the complicated space environments.