A measurement method of dual reference station gnss control network

A measurement method and control network technology, applied in the direction of measuring instruments, measuring devices, radio wave measurement systems, etc., can solve the problems of large error accumulation, high time consumption, and large personnel investment, so as to prevent large measurement errors and ensure Effect of measurement reliability and improvement of mobility

Active Publication Date: 2021-03-02
GUANGDONG PROVINCE COMM PLANNING & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method of network deployment is carried out step by step, and the design method is relatively simple, but the maneuverability is poor during the measurement process. Each control point must be measured one by one in order. In some engineering projects, it consumes a lot of time and requires a lot of personnel. , and there will be a situation where the error accumulates in a certain area

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  • A measurement method of dual reference station gnss control network
  • A measurement method of dual reference station gnss control network
  • A measurement method of dual reference station gnss control network

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0036] Embodiment 1 of the present invention is applicable to the situation where the distance span of the measured control network is not long or the first-level control is performed. Embodiment 1 of the present invention directly adopts the steps described in the above inventive concept, that is: the first embodiment of the present invention The control network under test contains only two reference stations and one measurement section.

[0037] The following examples illustrate the specific implementation process of Embodiment 1 of the present invention:

[0038]Example: The tested control network contains 11 control points, among which, control point 1 and control point 11 are the two known control points farthest apart, and control point 2 to control point 10 are unknown control points. Therefore, control point 1 and control point 11 are selected as reference site 1 and reference site 11, and control point 2 to control point 10 are non-reference site 2 to non-reference si...

Embodiment 2

[0045] Embodiment 2 of the present invention is applicable to situations where the span of the measurement area of ​​the controlled network under test is relatively large or the first-level control measurement and encryption control measurement are performed simultaneously. Embodiment 2 of the present invention is based on the above-mentioned inventive concept, and adopts the following preferred measures:

[0046] Step S1 also includes: selecting at least one head point from all control points of the tested control network as a reference station;

[0047] In step S2, the two measurement sections before and after the measurement have a common reference site; when measuring any two measurement sections before and after, one of the non-reference stations in the last observation period of the previous measurement section is the same as One of the non-reference sites in the first observation period of the latter survey segment is the same.

[0048] The following examples illustrate...

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Abstract

The invention discloses a dual-reference station type GNSS (Global Navigation Satellite System) control network measurement method. The method includes the following steps that: S1, two known control points that are furthest away from each other are selected from all control points in a measured control network as reference station points, and all the control points except the reference station points are called non-reference station points, and non-reference station points located between the two adjacent reference station points are affiliated to one measurement section; and S2, two GNSS receivers are adopted as reference station receivers, and all GNSS receivers except the reference station receivers are called mobile receivers, so that the measurement sections of the measured control network can be measured one by one until all the measurement sections of the measured control network are completely measured, and when any one of the measurement sections is measured, all the GNSS receivers measure the measurement section according to a plurality of time periods until all the non-reference station points of the measurement section are measured completely. With the method of the invention adopted, the measurement efficiency and maneuverability of the control network can be improved with measurement reliability ensured.

Description

technical field [0001] The invention relates to a double reference station type GNSS control network measurement method, which belongs to the engineering measurement control network observation method. Background technique [0002] Control survey work is the basic work in various engineering surveys. Control surveys are classified according to their measurement methods, which can be divided into triangulation network, wire network, GNSS network and other methods. GNSS (Global Navigation Satellite System) control measurement method is widely used in various engineering project control measurement because of its advantages of all-weather, high precision, global, and no need for line-of-sight between points. [0003] In the process of GNSS control measurement, the optimal design of control network is an extremely important work. A good optimized design scheme can make the entire control network have high precision and high reliability, and achieve the best effect of saving ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/14G01C15/00
CPCG01C15/00G01S19/14
Inventor 王志明邱赞富汤敏刘定李锦明钟南珍丘章富赵庆安李明张培凡刘委赖云辉王强刘祥兴
Owner GUANGDONG PROVINCE COMM PLANNING & DESIGN INST
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