Active correction method for low-complexity ADS-B anti-interference array antenna

An array antenna and calibration method technology, applied in antennas, electrical components, receiver monitoring and other directions, can solve problems such as position error, failure, amplitude and phase error, and achieve the effect of small calculation amount, performance improvement, and good correction effect

Inactive Publication Date: 2017-09-12
CIVIL AVIATION UNIV OF CHINA
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The current anti-jamming methods in signal processing are all based on the assumption that the array manifold of the array antenna is known accurately. However, the real array manifold will have a certain degree of deviation due to chang...

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
  • Active correction method for low-complexity ADS-B anti-interference array antenna
  • Active correction method for low-complexity ADS-B anti-interference array antenna
  • Active correction method for low-complexity ADS-B anti-interference array antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The low-complexity ADS-B anti-jamming array antenna active correction method provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation.

[0027] Such as figure 1 As shown, the low-complexity ADS-B anti-jamming array antenna active calibration method provided by the present invention comprises the following steps carried out in order:

[0028] 1) Use the array antenna on the receiver to receive the ADS-B signal transmitted by the aircraft;

[0029] 2) Demodulate the ADS-B signal received by any array element on the array antenna to obtain the position information including the longitude, latitude and height of the aircraft, and record the time when the ADS-B signal arrives at the array antenna;

[0030] 3) According to the moment when the above-mentioned ADS-B signal arrives at the array antenna, the above-mentioned ADS-B signal with aircraft position information is detected and several ...

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 active correction method for a low-complexity ADS-B anti-interference array antenna. The method comprises the steps: receiving an airplane ADS-B signal through an array antenna; obtaining the longitude and latitude and height of an airplane through the demodulation of one signal, and recording the moment when the ADS-B signal arrives at the antenna; cutting the ADS-B signal received by the array antenna according to the moment when the ADS-B signal arrives at the antenna; solving the position of the airplane according to the ADS-B signal, and calculating the direction of the ADS-B signal through combining with the pre-measured position of the array antenna; correcting the array antenna through an active correction method with the known signal direction; taking a large number of ADS-B signals as an auxiliary signal source for correcting the array antenna, and solving the mean value of a plurality of correction results. The method does not need an additional auxiliary signal source, combines the advantages of two modes: active correction and self-correction, is small in calculation burden, is good in effect, and does not need the manual setting of the additional auxiliary signal source. The array performance is remarkably improved after correction.

Description

technical field [0001] The invention belongs to the technical field of array signal processing, in particular to a low-complexity ADS-B anti-jamming array antenna active calibration method. Background technique [0002] Automatic Dependent Surveillance-Broadcast (ADS-B) is a new airspace surveillance technology being promoted by ICAO. Compared with the secondary radar (Secondary Surveillance Radar, referred to as SSR), the ADS-B system has higher accuracy, and the cost is much lower than SSR. It does not require manual operation or inquiry, and can automatically obtain parameters from relevant airborne equipment to broadcast the aircraft's position, altitude, speed, heading, identification number and other information to other aircraft or ground stations. [0003] At present, my country's aviation industry is developing rapidly. According to the "2016 National Airport Production Statistical Bulletin" published by the Civil Aviation Administration of China, in 2016, my count...

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): H01Q3/28H01Q3/40H04B17/21
Inventor 王文益朱特吴仁彪
Owner CIVIL AVIATION UNIV OF CHINA
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