Journal of Systems Engineering and Electronics ›› 2011, Vol. 33 ›› Issue (6): 1337-1341.doi: 10.3969/j.issn.1001-506X.2011.06.27

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Initial guidance algorithm for long-range optimal intercept problem based on Legendre pseudospectral method

TAN Li-fen, YAN Ye, ZHOU Ying, TANG Guo-jin   

  1. College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073, China
  • Online:2011-06-20 Published:2010-01-03

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Abstract:

Considering the earth’s oblateness effect of  J2 perturbation, the optimal initial guidance of long-range intercept problem is researched. With the characteristic of long flight time, a disturbed modifying method of fixedtime interception is analyzed and improved, and the impulsive strategy of optimal long-range interception is put forward. The initial guidance algorithm of finite-thrust optimal interception is also studied via an optimal control method Legendre pseudospectral method (LPM). The precision and efficiency of this initial guidance method are demonstrated by applying it to a high eccentric orbit （HEO）vehicle with small inclination.

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