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

A secure positioning and timing signal generation system based on low-orbit communication satellites

A technology for safe positioning and signal generation, applied in the field of signal generation, it can solve the problems of increasing the degree of communication signal transformation and large engineering construction cost, and achieve the effect of reducing capture and retaining navigation and measurement capabilities.

Active Publication Date: 2021-11-16
XIAN INSTITUE OF SPACE RADIO TECH
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This actually increases the degree of transformation of the communication signal, making the construction cost very high

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 secure positioning and timing signal generation system based on low-orbit communication satellites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further elaborated below in conjunction with embodiment.

[0035] The invention provides a safe positioning and timing signal generation system based on low-orbit communication satellites. By providing a navigation frame, it can be easily inserted into the communication frame; at the same time, the waveform includes a continuous wave without modulation content and a modulation fixed PRN code. Time section; the continuous wave without modulation content is conducive to fast capture and narrowing of the frequency and time search range; the PRN section is used for fine search and transfer-in tracking; the invention proposes a safe positioning and timing signal generation method, so as to solve the problem in existing communication The problem of adding navigation and ranging signals to the payload retains strict time characteristics and maximizes the navigation and measurement capabilities without affecting communication. Such as figure 1 , t...

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 relates to a safe positioning and timing signal generation system based on low-orbit communication satellites, belonging to the technical field of signal generation; including a navigation working module, a communication working module, a fusion module and a channel unit; wherein, the fusion module includes a navigation frame generation module, a clock Difference measurement module, communication frame generation module and synthesis module; by providing a navigation frame, it can be easily inserted into the communication frame; at the same time, the waveform contains a continuous wave with no modulation content and a time period with fixed PRN code modulation; no modulation content The continuous wave is conducive to fast capture and narrowing of the frequency and time search range; the PRN section is used for fine search and transfer-in tracking; the invention proposes a safe positioning and timing signal generation method to solve the problem of adding navigation and ranging to existing communication loads The problem of the signal, under the premise of not affecting the communication, retains the strict time characteristics, and retains the navigation measurement capability to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of signal generation, and relates to a safe positioning and timing signal generation system based on low-orbit communication satellites. Background technique [0002] In traditional communication and navigation signal fusion, it is generally through time division, phase division, code division or frequency division to directly add navigation signals similar to GNSS to the communication signal, which actually poses a high time-frequency requirement for the communication signal. Require. The next-generation Iridium satellite system has carried out adaptive transformation on the original Iridium satellite signal. Under the premise that the original communication function is basically not affected, the navigation signal enhancement function is added by using idle channel resources, but at the same time, the time-frequency system of the signal is required. There are important changes. This actually increases th...

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): G01S19/48G04R20/02
CPCG01S19/48G04R20/02
Inventor 王瑛严涛蒙艳松边朗雷文英王国永
Owner XIAN INSTITUE OF SPACE RADIO TECH