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Interference source direction finding system based on five-element uniform circular array interferometer

A uniform circular array and direction-finding system technology, applied in radio wave measurement systems, direction-determining orientators, instruments, etc., can solve the problems that narrow-band antennas cannot meet the needs of modern communication

Pending Publication Date: 2022-03-15
NANJING UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

[0003] Traditional narrowband antennas have been difficult to meet the needs of modern communications, and the use of ultra-wideband antennas is well suited to this trend

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  • Interference source direction finding system based on five-element uniform circular array interferometer
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  • Interference source direction finding system based on five-element uniform circular array interferometer

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Embodiment Construction

[0016] combine figure 1 , figure 2 , an interference source direction finding system based on a five-element uniform circular array interferometer, including a host computer and a display control module. The host includes a five-element uniform circular array interferometer module, a radio frequency receiving module, a signal processing module and a power supply module. Each direction-finding unit of the five-element uniform circular array interferometer module receives the interference source signal respectively, and the radio frequency receiving module filters and amplifies the signals of each receiving channel and sends them to the subsequent signal processing module, and the signal processing module down-converts the received signals of each channel , Acquisition and signal processing, according to the phase difference of each receiving channel signal to find the direction of the interference source signal, realize the direction finding function of the interference sourc...

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Abstract

The invention provides an interference source direction finding system based on a five-element uniform circular array interferometer. The interference source direction finding system comprises a five-element uniform circular array interferometer module, a radio frequency receiving module, a signal processing module and a power supply module, wherein the five-element uniform circular array interferometer module comprises five omnidirectional antenna units which are uniformly distributed on a uniform circumference and used for receiving interference source signals, the radio frequency receiving module comprises five receiving channels, and each receiving channel is in signal connection with the corresponding omnidirectional antenna unit. And the signal processing module performs frequency conversion, sampling and processing on the signals of the five receiving channels received by the front end.

Description

technical field [0001] The invention relates to a radio direction finding technology, in particular to an interference source direction finding system based on a five-element uniform circular array interferometer. Background technique [0002] Interferometer direction finding technology has been widely used in passive direction finding technology because of its advantages of high direction finding accuracy, simple structure, wide direction finding frequency band and easy implementation of hardware system. Interferometer arrays are mainly divided into linear arrays, special-shaped arrays and circular arrays. Special-shaped arrays include orthogonal arrays such as L-shaped, T-shaped, and cross-shaped. This type of interferometer can be split into two-dimensional linear arrays for measurement and calculation. , the angle measurement accuracy of the linear array interferometer is greatly affected by the direction of the incoming wave. When the angle of arrival is consistent with...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S3/46
CPCG01S3/46
Inventor 王昊方扬徐达龙王岩徐文文权双龙陶诗飞
Owner NANJING UNIV OF SCI & TECH