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Control point online real-time rapid analysis method and device based on CORS network

A technology for rapid analysis and control points, applied in the field of satellite observation data processing, it can solve the problems of observation data analysis lag, etc., and achieve the effect of being conducive to fast fixation, improved accuracy, and fast solution.

Active Publication Date: 2022-02-01
自然资源部第三大地测量队
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems caused by the analysis lag of existing observation data, the present invention provides an online real-time rapid analysis method of control points based on CORS network

Method used

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  • Control point online real-time rapid analysis method and device based on CORS network
  • Control point online real-time rapid analysis method and device based on CORS network
  • Control point online real-time rapid analysis method and device based on CORS network

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Embodiment 1

[0080] This embodiment proposes an online real-time rapid analysis method for control points based on the CORS network. This embodiment uses the prior data advantages of the existing CORS network solutions such as ambiguity and atmospheric errors to transmit the observation data of the control points to the data in real time. In the center, the control point and its nearby CORS stations are jointly networked and calculated to realize real-time online calculation and analysis of the observation data of the control point, which solves the shortcomings of traditional technology such as long time period, complicated workflow and high professional requirements. The hardware architecture that the method of this embodiment relies on is as follows: figure 1 As shown, the user only needs to set up an instrument on the control point to collect GNSS satellite observation data, and transmit the real-time observation data to the online calculation server through the network for data calcula...

Embodiment 2

[0149] This embodiment proposes an online real-time rapid analysis device for control points based on the CORS network, such as Figure 5 As shown, the device includes a task processing end, which includes a parameter analysis module, a data acquisition module, an initial coordinate calculation module, a network configuration generation module, an accurate calculation module, a network adjustment module, a verification module, and a result output module.

[0150]Among them, the parameter analysis module is used to analyze the solution-related parameter information (including data acquisition, accuracy requirements, acquisition frequency, instrument height, instrument model, contact information, etc.) obtained from the task establishment terminal.

[0151] The data acquisition module is used to obtain the satellite real-time observation data of the control point from the task establishment terminal according to the analyzed parameter information; the data acquisition module obt...

Embodiment 3

[0160] This embodiment adopts the XINJ reference station (denoted as U) in a CORS network as the control point to be solved, and uses the real-time satellite observation data (sampling interval of 1 second) of the control point to control the CORS network based on the above-mentioned embodiment 1. Point online real-time fast analysis method for verification, read and process one epoch data per second. The system processing flow is as follows:

[0161] (1) Perform initialization settings;

[0162] (2) Obtain parameter data and access the real-time satellite observation data stream of the point U to be calculated;

[0163] (3) Calculate the approximate position of U;

[0164] (4) Construct a virtual reference station at the approximate location of U, generate GGA with the approximate location, request differential data from the real-time positioning service of the CORS network, and use the received differential data as the observation data of the virtual reference station V; ...

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Abstract

The invention discloses a control point online real-time rapid analysis method and device based on a CORS network. The method comprises the following steps: obtaining control point observation data and calculation related parameter data in real time; according to the obtained data, preliminarily calculating the general coordinates of the control points, forming an ultra-short baseline by using the real-time observation data of the control points and the obtained virtual reference station observation values at the general coordinates, and calculating the accurate initial coordinates of the control points; rapidly calculating the accurate coordinates of the control points by using a CORS network; and performing precision test on the calculated accurate coordinates of the control points, if the test passes, outputting the calculation result of the current epoch observation data, otherwise, taking the calculation result of the current epoch observation data as a new initial value, and repeating the step 3 to calculate the next epoch observation data. According to the invention, the position of the control point can be solved in real time while data acquisition is carried out on the control point, and the real-time performance and reliability are improved.

Description

technical field [0001] The invention belongs to the technical field of satellite observation data processing, in particular to an online real-time rapid analysis method and device for control points based on a CORS network. Background technique [0002] At present, my country's Beidou satellite navigation system has provided navigation and positioning services on a global scale, and there will be more and more location services and related applications based on the Beidou satellite navigation system. Meter-level positioning results can be obtained by directly using navigation satellite signals. In the geographic information industry, many applications require centimeter-level or even millimeter-level positioning results, which are usually achieved by differential positioning. The traditional method of solving the precise coordinates of the control points usually adopts the method of GNSS static measurement, and obtains the precise coordinates of the control points through th...

Claims

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Application Information

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IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 张熙石鑫胡可陈现春李鹏成兵
Owner 自然资源部第三大地测量队
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