| 摘要 |
<p>The present invention relates to a device for underground radiolocation probing, wherein said device includes a generator (1) for generating a linear frequency modulation signal and having its output connected to an emitter antenna (12) through a coupler (2), a pre-amplifier (3), a delay unit (4), a power amplifier (5) and a coupler (16) which are serially connected together. The second output of the coupler (16) is connected to the first input of a high-frequency switch (19) through a delay unit (17) and an attenuator (18) serially connected together. The receiving antennas (13, 14) are three-dimensionally spaced apart from each other and are connected to the information input of an amplifier (7) for telemetrical frequency signals through high-frequency switches (15, 19), a mixer (6) having its second input connected to the output of the coupler (2), a high-frequency filter (20) and a rejection filter (21) which are serially connected together. The output of the amplifier (7) is connected to the input of an analog-to-digital converter (8) having its outputs connected to the first inputs of a personal computer (9) (PC). The second input of the PC is connected to the output of a location sensor (10). The first, second and fifth outputs of the PC (9) are respectively connected to the control inputs of the amplifier (7) for the telemetrical frequency signals, to the inputs of a unit (11) for representing and outputting information and to the inputs of a digital-to-analog converter (22). The output of said converter is connected to the input of the generator (1) for generating a linear frequency modulation signal and to the control input of the amplifier (7) for the telemetrical frequency signals. The third and fourth outputs of the PC (9) are connected respectively to the control inputs of the high-frequency switches (15, 19). The device of the present invention can be used for probing roadbeds and for studying underground structures as well as separate objects made of different materials at a high depth and with high resolution and sensitivity characteristics. This system increases the analysis and calculation rate of the geophysical parameters of the underground layer under test, and allows for a statistical processing of the geophysical information.</p> |
