1. 1 上海航天电子技术研究所,上海,201109
2. 北京航空航天大学电子信息工程学院,北京,100083
纸质出版:2010
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赵锋, 苗俊刚, 万国龙, 等. 一种实用的抗混叠星形天线阵列布局[J]. 电子学报, 2010,38(3):678-682.
ZHAO feng, MIAO Jun-gang, WAN Guo-long, et al. A Practical Anti-Aliasing Starlike Array in 2D Aperture Synthesis Microwave Radiometer[J]. Acta Electronica Sinica, 2010, 38(3): 678-682.
<FONT face=Verdana>8mm毫米波段综合孔径微波辐射计成像时,由于接收机尺寸的限制,基线最小间距过大,没有不混叠区域。背景对消法能消除小尺寸可移动物体成像中的混叠问题。而对于不可移动物体成像时,不能使用背景对消法来消除混叠。为了解决这种情况的混叠问题,本文提出了一种带子Y阵列的星形天线布局,这种布局能够将最小间距减小一半,因此能减少混叠程度。通过比较这种布局与Y形布局的仿真结果,表明此星形天线布局混叠较小,成像质量较高。
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<FONT face=Verdana>There is no alias-free FOV when the least space is more than 3.07 wavelengh because of bigger receiver size in 8mm aperture synthesis microwave radiometers. Background cancellation method which can eliminate aliasing in removable object's imaging is no useful when the scene cannot move. This paper give a new starlike array whose visibility samples is half of receiver size
so there is no severity aliasing problem in the new starlike array . The result of the emulate experiment show the imaging quality of starlike array is more higher than the quality of Y array.
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