Abstract：Cylindrical array antennas have three merits relative to common planar array antennas such as all-orientation space scanning, flexible search and track mode and good beam bearing etc. In this paper, firstly the differences between cylindrical array and uniform planar array are discussed in terms of eigenvalue distribution of the clutter covariance matrix and clutter distribution at range, and the conclusion of space-time clutter spectrum’s nonhomogeneity at range for airborne radar with cylindrical array antennas is gained. Secondly two different clutter suppression methods are proposed according to the clutter characteristic of airborne radar with cylindrical array antennas, which can resolve the problem of clutter spectrum’s nonhomogeneity at range. Finally, the simulation results verify the correctness of the proposed methods.
2007, Vol. 29 
