CN202404229U - GPS positioning radar corner reflector - Google Patents

Abstract

A GPS positioning radar corner reflector, the fixed base of the cement platform has a triangular base, the front support column, the middle support column and the rear support column on the triangular base support the triangular conical reflector, and the top of the support bar is connected with a GPS receiver , the bottom end is connected to the lower part of the rear support column, and the rear support column is connected with a rigging turnbuckle. Because the utility model adopts the above-mentioned structure, it can perform real-time positioning; it is not necessary to carry a GPS tripod for field measurement; it can solve the atmospheric phase so as to correct or weaken the atmospheric delay phase existing in the radar beam; it can assist in the unwrapping of the interferometric phase; The accuracy of radar image geocoding can be improved; the surface deformation obtained by GPS can be used to correct the surface deformation obtained by corner reflector radar interferometry technology, so as to improve the accuracy of monitoring surface settlement by corner reflector radar interferometry technology.

Description

A GPS positioning radar corner reflector

technical field

The utility model relates to an interferometric radar device for monitoring land surface subsidence, in particular, it can realize the positioning function of a corner reflector, and can weaken or correct the atmospheric phase existing in the synthetic aperture interferometric technique according to the atmospheric delay obtained by GPS.

Background technique

At present, as a cutting-edge technology in radar interferometry, corner reflector radar interferometry (CR-InSAR) is more and more widely used in the process of surface subsidence monitoring. For example: Shayer of the Potsdam Geological Center in Germany proposed to use a corner reflector made of a metal material with good electrical conductivity and magnetic permeability and a large permittivity to monitor the deformation of the surface subsidence; domestic China University of Mining and Technology, Central South University, Chinese Academy of Sciences, Wuhan University, Beijing University of Science and Technology and other units have used this technology to monitor the surface deformation of mining areas, highways, mountains, cities, etc. The corner reflectors used are generally made of aluminum materials, but the existing corner reflectors can pass through Adjust its inclination to accept radar incident waves in different directions, but it can only reflect the radar beam, but cannot realize the fast real-time positioning of the corner reflector and the detection of the atmospheric delay phase in the radar beam.

Contents of the invention

The purpose of the utility model is to provide a GPS positioning radar corner reflector which can realize fast real-time positioning and atmospheric delay phase detection in the radar beam.

The purpose of this utility model is achieved in that the front support column, the middle support column and the rear support column on the triangular base support the triangular conical reflector, the top of the support bar is connected with a GPS receiver, and the bottom end is connected to the bottom of the rear support column , the rear support column is connected with a rigging turnbuckle.

Because the utility model adopts the above-mentioned structure, it can perform real-time positioning; it is not necessary to carry a GPS tripod for field measurement; it can solve the atmospheric phase so as to correct or weaken the atmospheric delay phase existing in the radar beam; it can assist in the unwrapping of the interferometric phase; The accuracy of radar image geocoding can be improved; the surface deformation obtained by GPS can be used to correct the surface deformation obtained by corner reflector radar interferometry technology, so as to improve the accuracy of monitoring surface settlement by corner reflector radar interferometry technology.

Description of drawings

Fig. 1 is the structural diagram of the utility model embodiment.

In the figure, 1 cement platform, 2 base bolts, 3 triangular base, 4 front support columns, 5 middle support columns, 6 triangular conical reflectors, 7 GPS receivers, 8 upper fixing bolts, 9 support rods, 10 rigging turnbuckles, 11 connecting bolts, 12 lower fixing bolts, 13 rear support columns, 14 fixed bases. the

Detailed ways

Embodiment: a triangular base 3 is arranged on the fixed base 14 of the cement platform 1, and the front support column 4, the middle support column 5 and the rear support column 13 on the triangular base 3 support the triangular conical reflector 6, and the top of the support rod 9 is connected with The bottom end of the GPS receiver 7 is connected to the bottom of the rear support column 13 through a connecting bolt 11, and the rear support column 13 is connected with a rigging turnbuckle 10.

The triangular base 3 and the fixed base 14 are connected by the base bolt 2, the front support column 4 and the middle support column 5 are fixed support columns, the rear support column 13 is an adjustable support column, and the triangular cone shape can be adjusted through the rigging turnbuckle 10. The height of the reflector 6; the triangular conical reflector 6 is made of aluminum material, wrapped by aluminum sheets on three sides, one side is hollow, and the hollow surface is aligned with the incident direction of the radar wave; the GPS receiver 7 is fixed by the thread on the upper end of the support rod 9, and the support rod 9 is a pullable rod with a scale on it, the height of the support rod 9 can be adjusted by loosening the upper fixing bolt 8, and when the angle of inclination of the triangular conical reflector 6 is too large, it can be adjusted by loosening the lower fixing bolt 12 Extending the length of the support rod 9 in the lateral direction ensures that the support rod 9 does not contact the triangular conical reflector 6 .

When using the utility model to receive radar waves, first adjust the base fixing bolt 2 according to the incident direction of the radar waves so that the triangular conical reflector 6 turns to the incident direction of the radar waves in the plane, and then adjust the cable on the rear support column 13 The turnbuckle 10 adjusts the height of the triangular conical reflector 6 to accurately determine the position where the radar wave is received so that the radar wave can be reflected parallel to the incident direction. After adjusting the position of the triangular conical reflector 6, the GPS receiver 7 can be installed on the support rod 9, start the GPS static measurement synchronously with the triangular conical reflector 6, and the triangular conical reflector can be realized by the GPS measurement results The high-precision positioning of the reflector 6 and the inverse calculation of the atmospheric delay can improve the accuracy of the corner reflector radar interferometry results.

Claims (1)

1. A GPS positioning radar corner reflector, the front support column, the middle support column and the rear support column on the triangular base support the triangular conical reflector, and it is characterized in that: the top of the support bar is connected with a GPS receiver, and the bottom end is connected with At the lower part of the rear support column, a rigging turnbuckle is connected to the rear support column.

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