Discloses a waveguide horn antenna array and a method and system. The array comprising: a rectangular metal plate, wherein, in said processing the rectangular metal plate in the longitudinal direction of the rectangular cross section of the metal plate into a plurality of rectangular holes, each hole formed in the lower section of rectangular waveguide, each aperture the upper section is formed bell mouth; and forming a trench extending a predetermined depth along the arrangement direction of the plurality of holes at both sides of the hole on the upper surface of said rectangular metal plate. With the above embodiment, the antenna to maintain good performance in terms of bandwidth, directivity and the like, while improving the isolation of the transmitting and receiving antenna system.

The utility model discloses millimeter-wave holographic scanning three-dimensional imaging equipment. The equipment comprises a first millimeter-wave receiving and transmitting module; a second millimeter-wave receiving and transmitting module; a first guide-rail device, wherein the first millimeter-wave receiving and transmitting module can be connected to the first guide-rail device in a manner of sliding movement; a second guide-rail device, wherein the second millimeter-wave receiving and transmitting module can be connected to the second guide-rail device in the manner of sliding movement; and a driving device which is used for driving the first millimeter-wave receiving and transmitting module to move along the first guide-rail device, and/or driving the second millimeter-wave receiving and transmitting module to move along the second guide-rail device, wherein first and second scanning respectively carried out by the first millimeter-wave receiving and transmitting module and the second millimeter-wave receiving and transmitting module are both flat scanning. The equipment provided by the utility model can improve the scanning speed and accuracy, simplify the scanning operation, and improve the application flexibility of equipment.