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

Rapid m-sequence capture method for signal simulation

A signal simulation, m-sequence technology, applied in the field of signal simulation, can solve the problem of long acquisition time, and achieve the effect of shortening the acquisition period and fast acquisition

Active Publication Date: 2014-05-28
HARBIN INST OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of long time-consuming capture of the m-sequence of the analog signal in the existing signal simulation method, and to provide a fast m-sequence capture method for signal simulation

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
  • Rapid m-sequence capture method for signal simulation
  • Rapid m-sequence capture method for signal simulation
  • Rapid m-sequence capture method for signal simulation

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0028] Specific implementation mode one: the following combination Figure 1 to Figure 5 Describe this embodiment, the fast m-sequence capture method for signal simulation described in this embodiment, it includes three steps of capture of target signal m-sequence, catching up of target signal m-sequence and synchronous output of target signal m-sequence, specifically :

[0029] Step 1: Using the same clock pulse as the target signal, the n-level state value of the m-sequence of the target signal within n clock cycles is captured by the signal simulator, and the n-level state value is synchronized as the n-level m-sequence in the signal simulator The initial input value of the n-stage shift register of the generator;

[0030] Step 2: Starting from the n+1th clock cycle, obtain the state value of the target signal in the subsequent clock cycle according to the n-level state value of the target signal in m sequence within n clock cycles and its characteristic polynomial f(x) si...

specific Embodiment approach 2

[0033] Specific implementation mode two: the following combination figure 1 and figure 2 This embodiment will be described. This embodiment will further describe the first embodiment. In this embodiment, in step one, the n-level state values ​​of the m sequence of the target signal within n clock cycles are sequentially expressed as a 0 ,a 1 ,a 2 ,...a n-1 , and the clock pulse of the target signal is denoted as T c .

[0034] In this embodiment, it is assumed that starting from time 0, the signal simulator captures n-level state values ​​of m sequences within n periods of the target signal, which are respectively denoted as a 0 ,a 1 ,a 2 ,...a n-1 , and in turn as the n-stage shift register input. After n shift pulses T c The outputs of the shift registers of the subsequent stages are as follows figure 2 shown. The purpose of this step is to obtain the n-level state value of the target m-sequence as the initial value of the simulated m-sequence, and this proces...

specific Embodiment approach 3

[0035] Specific implementation mode three: the following combination Figure 1 to Figure 5 Describe this embodiment, this embodiment will further explain the second embodiment, this embodiment is: in step two, the acceleration clock pulse T is:

[0036] T=T c / (n+1).

[0037] In step 2, use the acceleration clock T=T c / (n+1), that is, in a T cn+1 shift operations are completed within a period of time. Among them, the start state and end state of the m-sequence catch-up process are as follows: image 3 and Figure 4 shown. By speeding up the clock by a factor of n+1, it is achieved at (n+1)T c At time, the m-sequence value of the analog output is exactly the n+1th value of the target m-sequence output. At this time, the m-sequence generator has caught up with the target in terms of elapsed time and output value.

[0038] In step 3, the synchronous output with the target signal is realized. In step 2, after catching up with the clock of the target m-sequence generator,...

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 belongs to the technical field of signal simulation and discloses a rapid m-sequence capture method for signal simulation, for solving the problem in a conventional signal simulation method that too much time is consumed for capturing m sequences of a signal to be simulated. The method comprises the following three steps: capturing m sequences of a target signal, pursuing the m sequences of the target signal and synchronously outputting the m sequences of the target signal. The method specifically comprises the following steps: capturing m sequences of the target signal, namely rapidly capturing various current states of the m sequences under known characteristic polynomial conditions, and finishing shifting operation in the whole period within a pulse clock by utilizing an acceleration clock, so that an m-sequence generator of the target is pursued to realize synchronization. The method is used for rapidly capturing m sequences.

Description

technical field [0001] The invention relates to a fast m-sequence capture method for signal simulation, belonging to the technical field of signal simulation. Background technique [0002] The m-sequence is the longest-period sequence generated by n-stage shift registers or other delay elements through linear feedback, with a period of 2 n -1. Due to many excellent properties such as easy generation and strong regularity of m sequence, it was first widely used in spread spectrum communication. However, with the increase of the number of shift registers, the period of the m-sequence is too long, and it takes more time to capture the m-sequence, which brings inconvenience to the application. [0003] The radar signal simulator plays an important role in radar performance testing, function debugging, equipment maintenance, etc. It can generate intermediate frequency signals, digital signals and radar echo signals in the form of radio frequency, and can simulate the detection ...

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): G01S7/40
CPCG01S7/40
Inventor 付宁邓立宝刘通杨亚坤乔立岩
Owner HARBIN INST OF TECH
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