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Diversity receiver utilizing sea wave feature information

A technology of feature information and diversity reception, applied in the direction of space transmit diversity, diversity/multi-antenna system, etc., can solve the problems of great influence on the receiver, poor communication quality, etc., and achieve the effect of increasing diversity gain and improving communication stability

Inactive Publication Date: 2014-12-31
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These multipath signals have a great impact on the receiver, resulting in good and bad communication quality. It is necessary to study diversity receivers suitable for maritime over-the-horizon communications, so that they can accurately track maritime communication channels

Method used

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  • Diversity receiver utilizing sea wave feature information
  • Diversity receiver utilizing sea wave feature information

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Embodiment Construction

[0021] exist figure 1 Among them, the output of the antenna (1) is connected to the input of the radio frequency communication circuit (2); the radio frequency communication circuit (2) outputs an intermediate frequency signal, and the intermediate frequency signal enters the mixer (4) together with the signal of the local oscillator (3); The output of the device (4) is connected to the input of the low-pass filter (5); the output of the low-pass filter (5) is connected to the input of the A / D conversion (6); the output of the A / D conversion (6) The terminal is connected to the input terminal of FPGA (7); the three-cup wind speed and direction sensor (11) and the GPS navigator (12) read the wind speed, wind direction and wind area information above the sea surface, and connect to the microprocessor (13) through the RS485 bus. The cable is three copper wires, one is a ground wire, and the other two are differential signal wires; the microprocessor (13) estimates the data from t...

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Abstract

The invention discloses a diversity receiving technology utilizing sea wave feature information. In order to solve the multi-path interference problem in sea surface beyond-visual-range communication. The sea wave feature information is utilized for realizing the time and frequency diversity receiving. A diversity receiver has the basic scheme that the diversity receiver comprises an FPGA (field programmable gate array), a microprocessor, an air speed and air direction sensor, a navigator and the like. The sea wave feature information is utilized, so that the multi-path signals can be effectively utilized, the diversity gain of the receiver is improved, further, the communication stability of the sea surface beyond-visual-range communication is improved, and the communication error rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of electronic communication, and relates to sea wave feature recognition and communication diversity reception technology. Specifically, the feature information of sea waves is extracted to provide multipath channel information for communication diversity receivers, so as to improve the quality of over-the-horizon communication on the sea surface. Background technique [0002] Since communication base stations cannot be freely set up in the ocean, a significant requirement of maritime mobile communication is to support long-distance communication. When the communication distance exceeds the line-of-sight range, over-the-line-of-sight communication is formed. [0003] Maritime over-the-horizon communication can be divided into sky wave, ground wave over-the-horizon communication and satellite communication. Among them, the ground wave over-the-horizon communication uses the diffraction effect of radio waves...

Claims

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Application Information

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IPC IPC(8): H04B7/08
Inventor 龚晓春
Owner HARBIN INST OF TECH AT WEIHAI
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