GNSS satellite signal receiving hierarchical processing simulation experiment platform

A satellite signal and hierarchical processing technology, applied in the field of signal processing, can solve problems such as difficult positioning, inability to receive satellite navigation signals, and ignoring the intermediate process

Active Publication Date: 2019-05-21
山东航向电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] GNSS signal is a kind of modulated wave used for navigation and positioning broadcast by GNSS satellites to users. GNSS satellite signal reception simulation experiments are used in current teaching platforms. The simulation teaching platform in the prior art only includes software parts and cannot perform GNSS satellites. Data reception and playback, signal capture, tracking, and positioning result calculation are completed at one time, ignoring the intermediate process, and cannot be processed hierarchically
When the software is running, it needs to configure a complex runtime library, which is cumbersome to operate and requires high computer performance.
The operability of the software is poor, and users cannot control variables according to their own needs
In terms of security, most similar products use watchdog encryption, which is expensive and troublesome to use
[0003] Existing GNSS simulation experiment platforms can only conduct simulation experiments, that is to say, such experiment platforms cannot receive real satellite navigation signals, and can only rely on simulation to explain GNSS principles
From receiving navigation satellite signals to obtaining the final positioning results, three steps are required: acquisition, tracking, and position calculation. The existing GNSS simulation experiment platform often ignores the two steps of acquisition and tracking, and directly outputs the original observation data without going through the intermediate process. For the final positioning result, the user cannot obtain the capture result and tracking result, and of course cannot analyze the capture performance and tracking performance, especially when the positioning result is wrong, it is difficult to locate the cause of the error

Method used

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  • GNSS satellite signal receiving hierarchical processing simulation experiment platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Such as figure 1 As shown, the GNSS satellite signal receiving hierarchical processing simulation experiment platform of the present invention includes a GNSS satellite signal receiving antenna, a radio frequency front-end processing device and a data processing computer, the GNSS satellite signal antenna receives the GNSS satellite signal, and the radio frequency front-end processing device converts the GNSS satellite After the signal is processed by the front end, the processed signal is transmitted to the data processing computer through the communication interface. After receiving the signal, the data processing computer performs signal capture and tracking, obtains GNSS satellite positioning information and conducts analysis experiments on the precision factor. The experimental modules include BDS / GPS constellation experimental module, BDS / GPS satellite signal experimental module, BDS / GPS satellite signal acquisition experimental module, BDS / GPS satellite signal tra...

Embodiment 2

[0096] Such as Figure 2-25 As shown, on the basis of Embodiment 1, the BDS / GPS constellation experiment module includes a satellite orbit experiment submodule and a satellite sub-satellite point trajectory experiment submodule, wherein the Beidou and GPS satellites are simulated by setting orbit parameters in the satellite orbit experiment submodule Orbital parameters include orbital ascending node, mean anomaly angle, orbital height, orbital inclination, eccentricity and orbital semi-major axis.

[0097] (1) Orbit ascending node Ω: the angle from the vernal equinox to the ascending node (the point where the spacecraft passes the equatorial plane from the southern hemisphere to the northern hemisphere).

[0098] (2) Eccentricity e: a parameter to determine the shape of the orbit. For an elliptical orbit, it is the eccentricity of the elliptical orbit.

[0099] (3) Orbit height: the height of the orbit of the satellite orbiting the earth in space from the surface of the eart...

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Abstract

The invention discloses a GNSS satellite signal receiving hierarchical processing simulation experiment platform and belongs to the technical field of signal processing. The system comprises a GNSS satellite signal receiving antenna, radio frequency front-end processing equipment and a data processing computer. An experiment module in the data processing computer comprises a BDS / GPS constellationexperiment module, a BDS / GPS satellite signal experiment module, a BDS / GPS satellite signal capture experiment module, a BDS / GPS satellite signal tracking experiment module and a BDS / GPS positioning experiment module. Hardware is combined with a software platform with a GNSS satellite signal processing function, GNSS satellite signal receiving and processing can be realized, a plurality of simulation experiment links are provided, and the problems that in the prior art, when software runs, a complex running library needs to be configured, the operation is tedious, and the requirement on the performance of a computer is very high are solved. The operability of software is poor, so that a user cannot carry out variable control according to own requirements.

Description

technical field [0001] The invention relates to a GNSS satellite signal reception hierarchical processing simulation experiment platform, which belongs to the technical field of signal processing. Background technique [0002] GNSS signal is a kind of modulated wave used for navigation and positioning broadcast by GNSS satellites to users. GNSS satellite signal reception simulation experiments are used in current teaching platforms. The simulation teaching platform in the prior art only includes software parts and cannot perform GNSS satellites. Data reception and playback, signal capture, tracking, and positioning result calculation are completed at one time, ignoring the intermediate process, and cannot be processed hierarchically. When the software is running, it needs to configure a complex runtime library, which is cumbersome to operate and requires high computer performance. The operability of the software is poor, and users cannot control variables according to their...

Claims

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Application Information

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IPC IPC(8): G01S19/37G01S19/24
CPCY02D30/70
Inventor常海宁朱雅涵
Owner山东航向电子科技有限公司