Hybrid polarization double-channel ground penetrating radar system
A technology of mixed polarization and ground penetrating radar, which is applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve the problem of difficult to ensure the correlation of echo signals, increase the complexity of the system and develop Problems such as cost, restricting scanning speed and work efficiency, etc., to achieve the effect of ensuring fast detection, fast speed and reducing system complexity
Inactive Publication Date: 2015-01-14
XIAMEN UNIV
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However, the full polarization working mode greatly increases the complexity and development cost of the system, restricts its scanning speed and work efficiency, and it is also difficult to ensure the correlation of the collected echo signals in different polarization modes
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[0025] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0026] see Figure 1~5 , the embodiment of the present invention is provided with dual channel vector network analyzer 1, mixed polarization antenna array 2, computer 3; Described dual channel vector network analyzer 1 and mixed polarization antenna array 2 are connected by coaxial transmission line, and computer 3 passes The GBIP data line is connected with the dual-channel vector network analyzer 1 and controls the dual-channel vector network analyzer 1 to send and receive radar signals and transmit data; the dual-channel vector network analyzer 1 is provided with a radar host 11, a transmitter 12, a first receiving machine 13, the second receiver 14, and the computer 3 is connected with the radar host 11 through the GBIP data line; the mixed polarization antenna array 2 is provided with a circularly polarized planar helical transmitting antenna 21,...
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The invention provides a hybrid polarization double-channel ground penetrating radar system and relates to ground penetrating radars. The hybrid polarization double-channel ground penetrating radar system is provided with a double-channel vector network analyzer, a hybrid polarization antenna array and a computer. The analyzer is connected with the antenna array through a coaxial line. The computer is connected with the analyzer through a GBIP data line. The analyzer is provided with a radar host, a transmitter, a first receiver and a second receiver. The antenna array is provided with a circular polarization plane spiral transmitting antenna and linear polarization receiving antennas. The transmitting antenna is connected with the transmitted signal output end of the transmitter. The first linear polarization receiving antenna is connected with the input end of the first receiver. The second linear polarization receiving antenna is connected with the input end of the second receiver. The first linear polarization receiving antenna is perpendicular to the second linear polarization receiving antenna. The transmitting antenna is parallel to the principal axis direction of the two receiving antennas. The approximate phase centers of the transmitting antenna and the two receiving antennas are located on the same horizontal plane and form an isosceles right triangle, namely the distances from the aperture centers of the two receiving antennas to the center of the transmitting antenna are equal.
Description
technical field [0001] The invention relates to ground penetrating radar, in particular to a mixed polarization dual-channel ground penetrating radar system. Background technique [0002] In the field of near-surface detection, ground-penetrating radar is widely used. However, the underground medium is complex and changeable, electromagnetic waves attenuate quickly in it, and surface clutter noise and underground clutter interference are serious, making the detection, imaging and attribute of underground targets difficult. Extraction becomes difficult. [0003] Since the reflected signal from the linear target underground or inside the wall has a strong dependence on the polarization direction of the transmitting and receiving antenna, more abundant target information can be obtained by collecting the reflected signal of different transmitting and receiving polarization combinations. The detection ability of the ground penetrating radar system is greatly improved, and infor...
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IPC IPC(8): G01S7/02
CPCG01S13/885G01S7/02
Inventor 刘海柳清伙陈忠刘颜回朱锦锋梁添
Owner XIAMEN UNIV
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