Method and system for confirming optimum operating frequency of underwater vehicle whip antenna

An underwater vehicle and operating frequency technology, applied in the transmission system, underwater/underground adaptation, suitable for antennas on movable objects, etc., can solve problems such as communication system establishment failure, improve reliability, and improve signal-to-noise Compared with the effect of reducing the receiving bit error rate

Active Publication Date: 2022-04-29
NAVAL UNIV OF ENG PLA
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The maritime environment is volatile, and communication system establishment failures often occur

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
  • Method and system for confirming optimum operating frequency of underwater vehicle whip antenna
  • Method and system for confirming optimum operating frequency of underwater vehicle whip antenna
  • Method and system for confirming optimum operating frequency of underwater vehicle whip antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with some accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] Such as figure 2 As shown, it can be seen that the total length of the whip antenna is l , the length of the exposed part is l 1 , the length in water is l 2 . In order to calculate the input impedance of the whip antenna at a certain height above the water surface, and determine the radiated power to the external field, it is necessary to consider the impedance of the antenna in the free spa...

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 present invention calculates the input impedance of the whip antenna on the water part and the total input impedance of the whip antenna by equating the above-water and underwater parts of the whip antenna carried by the underwater vehicle into a uniform double transmission line, and through the lossy transmission line The theoretical current and voltage distribution can obtain the radiated power that can reach the whip antenna on the water. Finally, under the premise that the total input power of the feed point of the whip antenna is constant, the corresponding maximum value of the external actual radiated power of the whip antenna can be obtained. The frequency of radiated electromagnetic waves is the optimal operating frequency of the underwater vehicle whip antenna. The optimal working frequency is obtained through the above method, so that under the premise that the total input power of the whip antenna feed point is small and the length of the whip antenna is short, the external actual radiated power of the whip antenna is improved as much as possible, and the maximum probability is guaranteed The communication improves the reliability of short-distance ultrashort wave communication, and has great strategic significance for the ultrashort wave communication of miniaturized unmanned boats.

Description

technical field [0001] The invention relates to the technical field of antenna communication, in particular to a method and system for confirming the optimum working frequency of a whip antenna of an underwater vehicle. Background technique [0002] The problem of antenna radiation and electromagnetic wave propagation is mainly used to study the radio communication tasks between radar and ships. Especially for small unmanned boats, short-distance network communication is an indispensable and important guarantee in wartime and other special periods. Due to the influence of wind speed, swell and other factors, the sea surface environment is often complex and changeable, which will undoubtedly affect the radio propagation process; and because the unmanned boat has the characteristics of light weight and small size, it cannot load a high-power transmitting antenna. The power range of the equipped transmitter is 10-50 W, and the length of the whip antenna is usually about 1 m. ...

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): H04B1/40H01Q1/34H01Q1/04
CPCH04B1/40H01Q1/34H01Q1/04
Inventor 修梦雷李丽华冯士民王世宇侯文达
Owner NAVAL UNIV OF ENG PLA
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