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

Intermediate-frequency cancellation technology

A technology, intermediate frequency technology, applied in the new field of leakage signal suppression, it can solve the problems of difficulty in realizing fast and accurate matching of leakage signals, complicated realization of elimination equipment, etc., and achieve the effect of high suppression ratio, reduced requirements and accurate measurement.

Inactive Publication Date: 2015-10-21
WUHU HANGFEI SCI & TECH
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned CW radar leakage signal cancellation method has three disadvantages: a. The leakage signal cancellation is relatively low, up to about 50dB; b. The implementation of the cancellation equipment is relatively complicated; c.

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
  • Intermediate-frequency cancellation technology
  • Intermediate-frequency cancellation technology
  • Intermediate-frequency cancellation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] like figure 1 Shown is the system block diagram of the continuous wave radar leakage signal cancellation system of the present invention. The leakage signal cancellation system of the present invention includes: transmitting antenna, receiving antenna, transmitter, receiver and controller, and the transmitting antenna radiates the signal of the transmitter , while the receiving antenna receives the echo signal and the direct wave signal leaked from the transmitting antenna. The transmitter is composed of a filter amplification module, an up-conversion module and a power amplifier; the receiver is composed of a low-noise amplifier, a down-conversion module, a filter amplification module and The quadrature demodulation module is composed; the controller includes an analog signal conditioning circuit and a digital signal processing...

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 provides the intermediate-frequency cancellation technology. An intermediate-frequency cancellation system comprises a antenna device, an emitter, a receiver and a controller. The antenna device is formed by an emitting antenna and a receiving antenna. The emitter is formed by a filtering amplifying module, an upper frequency conversion module and a power amplifier. The receiver is formed by a low-noise amplifier, a lower frequency conversation module, a filtering amplifying module and an orthogonal demodulation module. The controller comprises an analog signal conditioning circuit and a digital signal processing unit circuit. By carrying out sampling for orthogonally demodulated signals and real-time self-adaption cancellation for the signals, leaked signals can be restrained and measurement precision of the system is increased. Meanwhile, the video cancellation system is characterized in that the video cancellation system is easy to make and manufacture.

Description

technical field [0001] The invention relates to an intermediate frequency cancellation technology, which is a video leakage signal cancellation technology for landing navigation continuous wave speed measuring radar, and is a new leakage signal suppression method. Background technique [0002] Microwave leakage cancellation technology is the main technology to solve the problem of isolation between the radar transmitter signal directly leaked to the receiver signal, that is, the transceiver isolation problem, and it is also necessary for almost all continuous wave radars with high requirements. The importance of microwave leakage cancellation technology lies not only in its ability to suppress microwave leakage signals, but also in its ability to ensure moderate dynamics of radar echo signals. [0003] The current leakage suppression technology to solve the isolation of continuous wave radar mainly includes radio frequency cancellation, intermediate frequency cancellation an...

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): G01S7/36
CPCG01S7/36
Inventor 宋琪陈之典罗诗旭王宇航檀剑飞汪言康陈坤朱倩邓禹
Owner WUHU HANGFEI SCI & TECH
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