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

Asynchronous frequency hopping signal parameter blind evaluation method based on frequency splicing

A technology of frequency hopping signal and blind estimation, which is applied in the field of communication and can solve problems such as blind estimation

Active Publication Date: 2016-02-17
XIDIAN UNIV
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for blind estimation of asynchronous frequency hopping signal parameters based on frequency splicing to solve the blind estimation of frequency hopping signal parameters under the frequency collision scenario in an asynchronous non-orthogonal network To improve the adaptability of frequency hopping parameter estimation method to noise

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
  • Asynchronous frequency hopping signal parameter blind evaluation method based on frequency splicing
  • Asynchronous frequency hopping signal parameter blind evaluation method based on frequency splicing
  • Asynchronous frequency hopping signal parameter blind evaluation method based on frequency splicing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0081] The present invention will be further described below in conjunction with the accompanying drawings.

[0082] Refer to attached figure 1 , the concrete steps of the present invention are as follows.

[0083] Step 1, receive the signal.

[0084] The radar antenna receives any segment of the analog signal.

[0085] Step 2, signal sampling.

[0086] For any segment of analog signal received by the radar antenna, the sampling frequency f s Sampling is performed to obtain a discrete signal. The range of sampling frequency is: 10MHz≤f s ≤40MHz.

[0087] In the embodiment of the present invention, the sampling frequency is 20 MHz.

[0088] Step 3, perform short-time Fourier transform on the discrete signal according to the following formula to obtain the time-frequency domain signal.

[0089] Y ( l , q ) = Σ n = ...

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 an asynchronous frequency hopping signal parameter blind evaluation method based on frequency splicing. The blind evaluation method comprises steps of 1: receiving signals; 2: sampling signals; 3: performing short-time Fourier transform; 4: extracting sequence numbers; 5: calculating frequency; 6: clustering the frequency; 7: initially evaluating hopping period; 9: detecting collision frequency; 10: resolving the collision frequency; 11: constructing matrixes; 12: splicing the frequency; 13: precisely evaluating hopping period; 14: evaluating hopping time; and 15: evaluating frequency. According to the invention, the problem of hopping signal parameter blind evaluation in frequency collision occasions in an asynchronous nonopiate network is solved; and adaptability to noise of the hopping signal parameter evaluation method is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a method for blindly estimating parameters of asynchronous frequency hopping signals based on frequency mosaic in the technical field of wireless communication and signal processing. Under the condition that any a priori information of the channel and signal is unknown, only according to the received signal, the method of frequency splicing is adopted to realize the blindness of multiple frequency hopping signal parameters under the frequency collision scenario in the asynchronous non-orthogonal network. estimate. Background technique [0002] Frequency hopping communication has been widely used in military and civilian communications because of its low intercept probability, strong networking capability, and good interference resistance performance. Frequency hopping parameter estimation is a key link in frequency hopping reconnaissance technology, and its research ...

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 Applications(China)
IPC IPC(8): H04B1/713
CPCH04B1/713
Inventor 付卫红田德艳王璐刘乃安李晓辉黑永强韦娟
Owner XIDIAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com