Phased array radar amplitude-phase consistency detection method and system
A phased array radar and detection method technology, applied in the field of intelligent transportation, can solve the problems of high cost, time-consuming and labor-intensive, etc., and achieve the effect of avoiding phase uncertainty and maintaining the consistency of amplitude and phase
Pending Publication Date: 2020-11-20
NANJING UNIV
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However, the maintenance method in the prior art has the problems of time-consuming, labor-intensive and huge cost
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[0039] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] The antenna front of phased array radar is also composed of many radiating units and receiving units (called array elements). The number of units is related to the function of the radar, and can range from hundreds to tens of thousands. These units are regularly arranged on a plane to form an array antenna. Using the principle of electromagnetic wave coherence, the direction of the beam c...
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The embodiment of the invention discloses a phased array radar amplitude-phase consistency detection method and system. The method comprises the steps of: setting N probes in a preset range which is determined according to the condition that M vibrators and N probes are located in the radiation ranges of each other; obtaining initial data of the M oscillators and the N probes, the initial data comprising coordinate positions and pointing angles of the M oscillators, and radiation patterns and phase center coordinate positions of the M oscillators and the N probes; further, respectively measuring the M oscillators by utilizing the N probes one by one to obtain an amplitude set A<i, j> and a phase set P<i, j>; and further, according to the amplitude set A<i, j>, the phase set P<i, j> and theinitial data, determining the amplitudes and phases of the M oscillators and the coordinate positions and pointing angles of the N probes by using a least square method. Therefore, the phase uncertainty caused by cable movement can be avoided, and the purpose of assisting the phased array radar in keeping amplitude and phase consistency is directly achieved.
Description
technical field [0001] The embodiments of the present application relate to the technical field of intelligent transportation, and in particular to a phased array radar amplitude-phase consistency detection method and system. Background technique [0002] All radars need to ensure a certain amplitude and phase consistency to make the receiver work at its best. Large-scale phased array radar has a large number of oscillators, and it is inevitable that some oscillators will have problems during use, such as oscillator failure or excessive amplitude and phase deviation. Therefore, regular maintenance checks are required. However, the maintenance method in the prior art has the problems of time-consuming, labor-intensive and huge cost. [0003] Therefore, a more convenient, time-saving and labor-saving method is needed to maintain the phase consistency of the phased array radar. Contents of the invention [0004] To this end, the embodiments of the present application provi...
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Login to View More IPC IPC(8): G01S7/02G01S13/00
CPCG01S7/022G01S13/00G01S2013/0245
Inventor 丁一赵宇心
Owner NANJING UNIV