GNSS receiver array and high-precision deformation monitoring method based on same
A deformation monitoring and receiver technology, applied in the field of surveying and mapping, can solve the problem that the monitoring accuracy is difficult to further improve, and achieve the effect of improving GNSS deformation monitoring accuracy, improving monitoring accuracy, and good adaptability
Active Publication Date: 2018-10-02
WUHAN UNIV
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For applications that require higher monitoring accuracy, such as extracting weak seismic signals, analyzing wind-induced vibration characteristics of high-rise buildings, subgrade settlement of high-speed railways, load deformation of bridge structures and other deformation monitoring requirements with deformations of the order of 1mm, existing GNSS deformation monitoring technology is difficult to realize, mainly due to objective limitations such as receiver loop tracking accuracy and multipath effects, and it is difficult to further improve monitoring accuracy
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[0041] In order to illustrate the present invention and / or the technical solutions in the prior art more clearly, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.
[0042] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0043] The specific implementation manners of the present invention will be described below in conjunction with the accompanying dr...
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The invention provides a GNSS receiver array and a high-precision deformation monitoring method based on the same. According to the GNSS receiver array and the high-precision deformation monitoring method, a plurality of GNSS antennas are installed on a rigid body bracket, the rigid body bracket is fixed at a monitoring point, and each GNSS antenna is connected with a GNSS receiver; observed values of a plurality of the GNSS receivers are reduced to the position of one GNSS according to geometric positional relationships among phase centers of the plurality of GNSS antennas, so as to form a virtual GNSS receiver to increase the number of observable GNSS observed values; and a deformation amount is calculated by using all available observed values of the virtual GNSS receiver in a combinedmanner. Thus, the influence of observation noise and multiple paths can be effectively suppressed, and the precision and reliability of GNSS deformation monitoring can be improved.
Description
technical field [0001] The invention belongs to the fields of surveying and mapping and deformation monitoring, and in particular relates to a GNSS receiver array and a high-precision deformation monitoring method based on the GNSS receiver array. Background technique [0002] At present, the high-precision deformation monitoring technology of GNSS receivers can obtain the high-sampling rate and high-precision deformation of designated points in real time, all-weather, all-time, so it has been widely used. Typical applications include bridge dynamic monitoring, dam deformation Monitoring, slope monitoring, foundation pit monitoring, high-rise building deformation monitoring and other deformation monitoring fields. Compared with other deformation monitoring methods, GNSS deformation monitoring has the characteristics of low cost, high precision, convenient layout, and continuous monitoring. Since the displacement of GNSS monitoring points is usually small, and the monitoring...
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IPC IPC(8): G01B7/16G01S19/14
CPCG01B7/16G01S19/14
Inventor 王磊陈锐志陈亮申丽丽
Owner WUHAN UNIV