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Direction finding antenna simulation method and system

A technology of direction-finding antenna and analog system, applied in transmission systems, transmission monitoring, electrical components, etc., can solve the problems of complex construction, time-consuming, and occupied space, and achieve the effect of simple system construction and time saving.

Active Publication Date: 2019-03-01
CHENGDU JIUHUA YUANTONG TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the antenna emulators on the market need to set up a transmitting antenna outside to transmit signals when performing simulation experiments, and also need to use a receiving antenna to receive signals. The system structure is relatively complicated and takes up a lot of space. takes a lot of time

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  • Direction finding antenna simulation method and system
  • Direction finding antenna simulation method and system
  • Direction finding antenna simulation method and system

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Embodiment Construction

[0018] Such as figure 1 As shown, the 01C case of Changhe case is selected this time, with a depth of 280mm, a width of 240mm, and a panel height of 2U. Each emulator is equipped with two sets of devices with two calibers at the high and low ends. Each set of devices works independently, and the RF input and output are SMA-K.

[0019] The output ports of the high-end power splitter are respectively connected by 5, 7, and 9 high-end delay cables to form three types of high-end array antennas: five-element array, seven-element array, and nine-element array. The working frequency is 800MHz-3000MHz; The output ports of the end power splitter are respectively connected by 5, 7, and 9 low-end delay cables to form three types of low-end array antennas: five-element array, seven-element array, and nine-element array. The working frequency is 30MHz to 1000MHz .

[0020] The path differences of elements 1-5 of the low-end delay cable of the five-element array are 0mm, 102mm, 472mm, 59...

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Abstract

The invention discloses a direction finding antenna simulation method and system. According to the direction finding antenna simulation method and system disclosed by the invention, different receiving channels are simulated by using a delay cable, a reference delay cable length L1 is set at first, a distance difference D1-i of a current array element i relative to a first array element is calculated through a sine function according to four parameters, that is, different incoming wave angles alpha, an antenna aperture D, the number of array elements n and the current array element i, and thelength of the delay cable is a sum of the reference delay cable length L1 and the distance difference D1-i. Meanwhile, the system is composed of a one-into-nine zero degree power divider and cables, and can be divided into a five-element array simulator, a seven-element array simulator and a nine-element array simulator according to an antenna array, the power divider is divided into two types ofthe low end and the high end and the cables are divided into equal length cables, low-end delay cables and high-end delay cables. The device has the advantages that no transmitting antenna or receiving antenna needs to be set up, and system joint debugging and software testing can be performed in an indoor environment. The system establishment is simple, the simulated incoming wave orientation isfixed, and a lot of time is saved for system joint testing and software testing.

Description

technical field [0001] The invention relates to the field of radio direction finding, in particular to a method and system for simulating a direction finding antenna. Background technique [0002] At present, the antenna emulators on the market need to set up a transmitting antenna to transmit signals outside when performing simulation experiments, and also need to use a receiving antenna to receive signals. The system structure is relatively complicated and takes up a lot of space. takes a lot of time. Contents of the invention [0003] In order to solve the above problems, a direction finding antenna simulation method and system are provided. [0004] A simulation method for direction-finding antennas, using delay cables to simulate different receiving channels, first setting the reference delay cable length L1, and using a sine function according to different incoming wave angles α, antenna diameter D, and array element number n , four parameters of the current array ...

Claims

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Application Information

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IPC IPC(8): H04B17/00
CPCH04B17/0087
Inventor 宁涛
Owner CHENGDU JIUHUA YUANTONG TECH DEV
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