Fast far field approximation for calculating the RCS of large objects

Cai Cheng Lu, Weng Cho Chew

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


In many high frequency scattering problems, the scatterers are large compared to wavelength. When high frequency is required, exact solution is impossible with current computer resources. In this case, approximate methods are very helpful. Another RCS estimation technique is thus presented, called the fast far field approximation. This technique computes the interactions between elements using different methods depending on the electrical distance between the elements. The field interactions are calculated iteratively using conjugate gradient method. A formulation using two dimensional electrical field integral equation for TM wave incident case is also presented. Then numerical simulations are given for both dimensional and three dimensional targets.

Original languageEnglish
Pages (from-to)22-25
Number of pages4
JournalIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
StatePublished - 1995
EventProceedings of the 1995 IEEE Antennas and Propagation Society International Symposium. Part 4 (of 4) - Newport Beach, CA, USA
Duration: Jun 18 1995Jun 23 1995

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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