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CPM-CGCS2000 building method for CGCS2000 plate model

A construction method and block technology, applied in electromagnetic wave detection, etc., can solve problems such as not having good model interpretability, model predictability, and block not having a reliable verification method

Active Publication Date: 2012-08-29
CHINESE ACAD OF SURVEYING & MAPPING
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Problems solved by technology

2) Plate division problem
There is no reliable verification method for the built plates, and the model itself does not have good model interpretability and model predictability

Method used

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  • CPM-CGCS2000 building method for CGCS2000 plate model
  • CPM-CGCS2000 building method for CGCS2000 plate model

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] First, select the global core frame point as the initial benchmark of the CGCS2000 frame, comprehensively adopt the international ITRF frame point selection principle and the 7-parameter supervision clustering and site uniform selection principle proposed by this method to select the CGCS2000 frame point, CGCS2000’s continuous observation and periodic re-measurement of the CGCS2000 frame network’s accumulated observation data for many years are processed with high-precision and rigorous calculation methods to obtain accurate station coordinates and frame point long-period trend item information under the international earth reference frame ITRF;

[0023] It should b...

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Abstract

The invention discloses a CPM-CGCS2000 building method for a CGCS2000 plate model. The method comprises the following steps: S1, picking a global core framework point as the initial standard, picking a CGCS2000 framework point according to an ITRF (International Terrestrial Reference Frame) framework point picking principle and a 7 parameter supervised cluster and station homogenization picking principle, and processing a CGCS2000 framework net observation data through a calculation method to obtain an accurate station coordinate under ITRF and framework point long-period trend term information; S2, determining a primary plate boundary and a secondary plate boundary of CPM-CGCS2000 of geologic structure motion of China; S3, building a primary mass movement model and a secondary mass movement model of CPM-CGCS2000; and S4, assessing and checking the plate models. The method can realize high-precision maintenance of the national CGCS2000 framework point and can realize centimeter-sized reduction from GNSS actual measurement point to CGCS2000.

Description

technical field [0001] The invention relates to the technical field of national high-precision geocentric coordinate frame and geodetic datum maintenance, in particular to a construction method of the CGCS2000 plate model CPM-CGCS2000. Background technique [0002] After the realization of the coordinate definition framework of CGCS2000 (the abbreviation of 2000 National Geodetic Coordinate System), it involves the high-precision dynamic maintenance of the CGCS2000 framework. A common method is to correct the displacement of the station caused by the plate movement according to the long-period trend item information of the frame point at the actual point. This method is only suitable for CORS stations with many years of observations. After data processing, the long-period trend item information of the frame point of the station is obtained for correction, but for newly-built stations, the long-period trend item information of the frame point cannot be obtained. Moreover, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12
Inventor 程鹏飞成英燕秘金钟王华王晓明
Owner CHINESE ACAD OF SURVEYING & MAPPING
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