Device for radiolocation of objects in space and a GPR system
A device for radiolocation of objects in space ( 100 ), comprising: a frequency-modulated continuous-wave FMCW generator ( 101 ), a transmitting-receiving antenna ( 102 ) connected to the generator ( 101 ), a non-linear quadripole ( 103 A) squaring the input signal, connected at its input to the generator ( 101 ) and to the antenna ( 102 ), and at its output to a filter ( 104 A, 104 B). A ground penetrating radar system ( 200 ) adapted to detect wave-reflecting objects ( 301 ) located in the vicinity of a wave-propagating medium ( 300 ), comprising: the device for radiolocation of objects in space ( 100 ), an echo signal amplifier ( 201 ), an analogue-to-digital echo signal converter ( 202 ) and a processing and visualisation circuit ( 203 ).
1 . A device for radiolocation of objects in space ( 100 ), comprising:
a frequency-modulated continuous-wave FMCW generator ( 101 ),
a transmitting-receiving antenna ( 102 ) connected to the generator ( 101 ),
a non-linear quadripole ( 103 A), squaring the input signal, connected at its input to the generator ( 101 ) and to the antenna ( 102 ), and at its output to
a filter ( 104 A, 104 B).
2 . The device according to claim 1 , comprising a delay line ( 105 ) through which the antenna ( 102 ) is connected to the generator ( 101 ).
3 . The device according to claim 1 , wherein the delay line ( 105 ) is in the form of a wave-conformed transmission line or an LC delay circuit, or a delay circuit based on surface acoustic waves (SAW).
4 . The device according to claim 1 , wherein the filter is a low pass filter ( 104 A) or a band pass filter ( 104 B).
5 . The device according to any of claim 1 , wherein the non-linear quadripole ( 103 A) is based on a FET or a diode circular mixer.
6 . A device for radiolocation of objects in space ( 100 ), comprising:
a frequency-modulated continuous-wave FMCW generator ( 101 ),
a transmitting-receiving antenna ( 102 ) connected to the generator ( 101 ),
a mixer ( 103 B) connected
at its first input to the generator ( 101 ) and to the antenna ( 102 ),
at its second input to the generator ( 101 ),
at its output to
a filter ( 104 A, 104 B).
7 . The device according to claim 6 , wherein the mixer ( 103 B) is connected at its second input to the generator ( 101 ) via an additional delay line ( 106 ).
8 . The device according to claim 6 , wherein the mixer ( 103 B) is connected at its first input to the antenna ( 102 ) via the delay line ( 105 ).
9 . The device according to claim 7 , wherein the additional delay line ( 106 ) is in the form of a wave-conformed transmission line or an LC delay circuit, or a delay circuit based on surface acoustic waves (SAW).
10 . The device according to claim 8 , wherein the delay line ( 105 ) is in the form of a wave-conformed transmission line or an LC delay circuit, or a delay circuit based on surface acoustic waves (SAW).
11 . The device according to claim 6 , wherein the filter is a low pass filter ( 104 A) or a band pass filter ( 104 B).
12 . A ground penetrating radar system ( 200 ) adapted to detect wave-reflecting
objects ( 301 ) located in the vicinity of the wave-propagating medium ( 300 ), comprising:
the device for radiolocation of objects in space ( 100 ) according to claim 1 ,
an echo signal amplifier ( 201 ),
an analogue-to-digital echo signal converter ( 202 ),
a processing and visualisation circuit ( 203 ).
13 . The system according to claim 12 , adapted to detect wave-reflecting objects
( 301 ) in a wave-propagating medium ( 300 ) which is the ground.
14 . The system according to claim 12 , adapted to detect metal and/or dielectric, and/or ferromagnetic objects ( 301 ).