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Software radio-based wide frequency range direction of arrival identifying equipment

A software radio and direction-of-arrival technology, applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve problems such as poor resolution of direction-finding signals, achieve high precision, wide range of direction-finding frequencies, and improve software reuse degree of effect

Inactive Publication Date: 2011-02-09
NANJING UNIV
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcoming of poor direction-finding signal resolution of existing electronic detective equipment, and provide a wide-band direction-of-arrival identification device based on software radio with high resolution

Method used

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  • Software radio-based wide frequency range direction of arrival identifying equipment
  • Software radio-based wide frequency range direction of arrival identifying equipment
  • Software radio-based wide frequency range direction of arrival identifying equipment

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Embodiment Construction

[0018] The broadband Direction of Arrival (DOA) identification device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] The broadband DOA identification device of the present invention is composed of HF radio frequency unit, VHF radio frequency unit, UHF radio frequency unit, a group of digital intermediate frequency units, a main control unit, an interface unit, a display unit and the like. The original structure block diagram of the equipment is as follows: figure 1 shown. The device can be externally connected to antenna arrays of various frequency bands to realize array signal processing, and the antenna arrays can be linear or circular arrays. Among them, the HF, VHF and UHF radio frequency units convert the radio frequency receiving signals in their respective frequency bands into intermediate frequency signals, and the radio frequency units all have corresponding filtering and shielding circuits. Each ra...

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Abstract

The invention discloses software radio-based wide frequency range direction of arrival identifying equipment. The equipment comprises a high frequency (HF) radio frequency unit, a very high frequency (VHF) radio frequency unit, an ultra high frequency (UHF) radio frequency unit, a group of digital intermediate frequency units, a master control unit, an interface unit and a display unit, wherein the HF radio frequency unit, the VHF radio frequency unit and the UHF radio frequency unit receive signals within respective frequency ranges, convert the received signals into intermediate frequency signals and transmit the intermediate frequency signals to the digital intermediate frequency units; the digital intermediate frequency units transmit the signals to the master control unit through compact peripheral component interconnect (CPCI) buses and receive control signals which are fed back by the master control unit; and the display unit and the interface unit are connected with the master control unit respectively. The software radio-based wide frequency range direction of arrival identifying equipment has the advantages of wide direction-finding frequency range, high precision and the like.

Description

technical field [0001] The invention specifically relates to a software radio-based wide-band wave direction-of-arrival identification device. Background technique [0002] Electronic detectives mainly use electronic equipment to detect, identify, analyze and locate electromagnetic signals radiated by communication, radar, navigation, electronic interference and other equipment, and obtain information such as their technical parameters, communication content, location, etc. Based on the implementation of electronic countermeasures and anti-countermeasures. However, there are a large number of radiation sources in the electromagnetic signal space environment, which are distributed in a wide frequency domain and space domain, and there are many working systems and complex waveforms. Various electromagnetic signals are crowded in the frequency domain and densely overlapped in the time domain. Therefore, it is actually quite complicated for electronic reconnaissance to intercep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08
Inventor 张兴敢俞春华唐岚柏业超张颖周谊珉高艳宁
Owner NANJING UNIV
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