Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Tracking demodulation method of high dynamic spread spectrum signal

A technology of spread spectrum signal and demodulation method, which is applied in the field of receiving and processing of high dynamic spread spectrum signal, can solve the problems affecting the acquisition of spread spectrum code, achieve the effect of improving tracking demodulation speed and reducing resource usage

Active Publication Date: 2019-04-05
北京航天万源科技有限公司
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the Doppler frequency offset in a large range affects the acquisition of spreading codes under high dynamic conditions

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
  • Tracking demodulation method of high dynamic spread spectrum signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A method for tracking and demodulating a highly dynamic spread spectrum signal of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The spread spectrum signal parameters involved in the implementation case: intermediate frequency 11.52MHz, spread spectrum code rate 7.68MHz, sampling rate 46.08MHz, spread spectrum code length 128, modulation method BPSK, baseband code rate 60KHz, Doppler frequency offset 20KHz.

[0025] The implementation steps of the case are as follows:

[0026] 1. IF signals with Doppler frequency deviation enter separately figure 1 In the middle, I-way multiplier 2, I-way low-pass filter 5 and Q-way multiplier 3, and Q-way low-pass filter 6 complete quadrature down-conversion to generate I and Q two-way signals, and output the above-mentioned signals to n-channel partial correlation FFT7, carry out the FFT operation of partial correlation, obtain the complex number FFT cal...

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 tracking demodulation method of a high dynamic spread spectrum signal, belongs to the field of high dynamic spread spectrum signal reception and processing in the aerospaceremote measurement communication system, and aims at solving the problem that large-range Doppler frequency offset influence capture of spreading codes. Code spreading, capturing and tracking are integrated in design, demodulation data is directly decided in processing, a spreading code tracking loop and a code synchronization loop are omitted, the spread spectrum signal tracking demodulation speed is improved greatly, the resource application amount is reduced, and strict requirement for the processing platform of processing short-time burst signals in real time can be met.

Description

technical field [0001] The invention relates to the field of receiving and processing high dynamic spread spectrum signals in the aerospace telemetry communication system. Specifically, it relates to a tracking and demodulation method of a high dynamic spread spectrum signal, which can satisfy the real-time reception and processing of the spread spectrum telemetry signal by an aerospace high dynamic platform. Background technique [0002] Receiving broadband spread spectrum signals on aerospace high dynamic platforms needs to face the problem that high-speed spread spectrum codes cannot be captured due to large-scale Doppler frequency offset. The tracking and demodulation method of a high dynamic spread spectrum signal involved in the present invention can effectively solve this problem, and compared with some common solutions at present, it has the integrated design of the capture and tracking process of the spread spectrum code, and the direct judgment of the demodulated d...

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
IPC IPC(8): H04B1/7073
CPCH04B1/7073
Inventor 邹敏林汝梁丁辉王铮骆海潮梁训波
Owner 北京航天万源科技有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com