A High Precision Channel Calibration Method Based on Channel Phase Noise Statistics

A phase noise and calibration method technology, applied in radio wave measurement systems, receiver monitoring, instruments, etc., can solve problems such as different phase noise characteristics, achieve good statistical characteristics, and shorten the calibration period.

Active Publication Date: 2022-02-15
TIANJIN JINHANG COMP TECH RES INST
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the actual communication system, due to various reasons, the real phase noise characteristics are different from the independent Gaussian white noise characteristics

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 High Precision Channel Calibration Method Based on Channel Phase Noise Statistics
  • A High Precision Channel Calibration Method Based on Channel Phase Noise Statistics
  • A High Precision Channel Calibration Method Based on Channel Phase Noise Statistics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] In this embodiment, the high-precision channel calibration method based on channel phase noise statistics includes the following steps:

[0032] The first step: if Figure 4 As shown, for each antenna received signal x m (n) Weighted after down-conversion processing, the output expression after weighting of M array elements is recorded as:

[0033] Y(t)=W X (1)

[0034] Use MP × 1-dimensional vector X to represent the input data of each array after P time delays, namely:

[0035] x T =[x 1 (0)...x 1 (P+1),...,x M (0)...x M (P+1)] (2)

[0036] Then after the length of L data segments, the two-dimensional matrix corresponding to the input data becomes

[0037]

[0038] Define MP×1-dimensional vector W...

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 high-precision channel calibration method based on channel phase noise statistics, which performs multiple sampling for calculation, thereby better reflecting statistical characteristics; since the channel phase and phase noise change with changes in temperature and external interference, Keep the calibration cycle as short as possible, preferably within 100 milliseconds. In the commonly used channel phase calibration method, phase noise is only regarded as Gaussian white noise, and the characteristics of the noise are not accurately statistically estimated, resulting in the loss of channel calibration accuracy. The present invention solves the above defects well.

Description

technical field [0001] The invention belongs to the technical field of radio frequency channel calibration and relates to a high-precision channel calibration method based on channel phase noise statistics. Background technique [0002] In multi-channel angle measurement systems such as radar and phased array, it is difficult to achieve the same phase-frequency characteristics of each receiver; the signal is received by the array and reaches the receiver, such as figure 1 As shown, there will inevitably be inconsistencies in the phase characteristics of the received signals among the various receiving channels. The phase between the channels directly leads to angle measurement errors in the receiver. Therefore, the calibration accuracy of the channel phase directly affects the angle measurement accuracy of the whole system. [0003] At present, the commonly used RF channel calibration method mainly assumes that the mean value of the channel phase noise is zero and the vari...

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): H04B17/21G01S7/40
CPCH04B17/21G01S7/4021
Inventor 孙松斌
Owner TIANJIN JINHANG COMP TECH RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap