The invention discloses a multiple-input multiple-output imaging antenna
layout method of a close-distance
planar array. The method comprises the steps that firstly, the size of a shortest effective composite array of an imaging
system and the size of a
planar array element antenna are determined; secondly, the
minimum distance between similar receiving and transmitting antenna centers is determined; thirdly, the total number of receiving and transmitting antenna elements of a minimum composite array of the imaging
system and the size of the minimum composite array are determined; fourthly, the number of total receiving and transmitting array elements of the imaging
system, the number of antenna equivalent phase centers of the imaging system and the size of the
planar array of the imaging system are calculated; fifthly, the distribution of the geometrical center positions of the transmitting and receiving
array element antennas of the imaging system is calculated; sixthly, the
layout is carried out according to the distribution of the geometrical center positions of the transmitting and receiving
array element antennas of the imaging system. According to the
layout method, the problem that in the planar array
MIMO imaging, the length of the effective composite array is affected by the observation distance is solved, and on the premise of guaranteeing the quality of close-distance
microwave images, the data acquiring efficiency is further improved.