Unlock instant, AI-driven research and patent intelligence for your innovation.

A method and device for evaluating compatibility between satellite navigation systems

A technology of satellite navigation system and navigation system, which is applied in the direction of satellite radio beacon positioning system, measurement device, radio wave measurement system, etc., can solve problems such as large amount of calculation, incompleteness, and incompleteness, so as to reduce complexity and improve The effect of improving efficiency and accuracy

Active Publication Date: 2016-06-15
BEIJING UNIV OF POSTS & TELECOMM
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the secondary code is added to the signal quality of the new satellite navigation system, a new data code is generated through the secondary code and the data code and then modulated, resulting in inaccurate amplitude of the power spectral density of the new signal, resulting in The equivalent carrier-to-noise ratio attenuation is not accurate, so the analysis of the existing mathematical model will be incomplete and incomplete; in addition, because the process of calculating the power spectral density of the desired signal and the interference signal is too complicated, resulting in a huge amount of calculation, The analysis time is long and the efficiency is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method and device for evaluating compatibility between satellite navigation systems
  • A method and device for evaluating compatibility between satellite navigation systems
  • A method and device for evaluating compatibility between satellite navigation systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The embodiment of the present invention provides a method for evaluating compatibility between satellite navigation systems, see figure 1 , the method flow includes:

[0048] 101: Calculate the code rate of the desired signal according to the first data code and the first secondary code in the desired signal, and calculate the code rate of the interference signal according to the second data code and the second secondary code in the interference signal, wherein The desired signal belongs to the signal transmitted by the satellite of the first navigation system, and the interference signal belongs to the signal transmitted by the satellite of the second navigation system;

[0049] 102: According to the data power spectral line interval of the desired signal and the code rate of the desired signal, select a calculation formula for calculating the signal power spectral density of the desired signal, and calculate the signal power spectral density of the desired signal; and...

Embodiment 2

[0054] The embodiment of the present invention provides a method for evaluating compatibility between satellite navigation systems, see figure 2 , the method flow includes:

[0055] 201: Calculate the code rate of the desired signal according to the first data code and the first secondary code in the desired signal, and calculate the code rate of the interference signal according to the second data code and the second secondary code in the interference signal, wherein The desired signal belongs to the signal transmitted by the satellite of the first navigation system, and the interfering signal belongs to the signal transmitted by the satellite of the second navigation system.

[0056] Among them, in the satellite signal of the new navigation system, the generated data code is obtained by the operation of the original data code and the secondary code. At this time, the generated data code is spread by the spreading code and then modulated with the carrier to a certain value. ...

Embodiment 3

[0101] An embodiment of the present invention provides an apparatus for evaluating compatibility between satellite navigation systems, see image 3 , the device includes:

[0102] The first calculation module 301 is configured to calculate the code rate of the desired signal according to the first data code and the first secondary code in the desired signal, and calculate the interference according to the second data code and the second secondary code in the interference signal The code rate of the signal, wherein the desired signal belongs to the signal transmitted by the satellite of the first navigation system, and the interference signal belongs to the signal transmitted by the satellite of the second navigation system;

[0103] The second calculation module 302 is configured to select a calculation formula for calculating the signal power spectral density of the desired signal according to the data power spectral line interval of the desired signal and the code rate of th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and a device for evaluating compatibility between satellite navigation systems, which belong to the field of satellite location. The method comprises the following steps of calculating a bit rate of each satellite signal by introducing a secondary code, selecting a formula for calculating a power spectrum density of each satellite signal according to the bit rate and the data power spectrum spectral line space, calculating the spectrum separation factor according to the obtained power spectrum density, calculating an equivalent carrier-to-noise ratio attenuation of an interference signal in the system, equivalent carrier-to-noise ratio attenuation of the interference signal between systems and the equivalent carrier-to-noise ratio attenuation of an expected signal so as to evaluate the compatibility between the satellite navigation systems. The bit rate of each satellite signal is calculated by introducing the secondary code, so that the bit rate is improved, and the accuracy for calculating the power spectrum density of the satellite signal can be improved; the formula for calculating the power spectrum density is selected according to the bit rate, so that the complexity for calculating the power spectrum density is further reduced, and the efficiency for evaluating the compatibility between the satellite navigation systems can be improved.

Description

technical field [0001] The present invention relates to the field of satellite positioning, in particular to a method and device for evaluating compatibility between satellite navigation systems. Background technique [0002] Global Navigation Satellite System (Global Navigation Satellite System) is a strategic basic information technology system that contemporary countries are competing to develop. At present, the technology is mature, and the satellite navigation systems with relatively wide application market include the global positioning system of the United States, the Beidou satellite navigation system of China, the Galileo satellite navigation system of the European Union, and the Grunas satellite navigation system of Russia. Among them, different satellite navigation systems share some of the same signal transmission frequency and signal bandwidth, resulting in the mutual interference of satellite navigation signals between different systems, which will theoreticall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/23G01S19/30
CPCG01S19/21G01S19/23G01S19/30
Inventor 邓中亮王冠一席岳詹中伟董慧李长明李杰强
Owner BEIJING UNIV OF POSTS & TELECOMM