Equivalent device for millimeter wave radiometer test

A millimeter wave and radiometer technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as high power consumption, low voltage control accuracy, and limited service life of attenuators, saving time, manpower and physics cost effect

Inactive Publication Date: 2017-03-22
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are disadvantages such as low voltage control accuracy a...

Method used

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  • Equivalent device for millimeter wave radiometer test
  • Equivalent device for millimeter wave radiometer test
  • Equivalent device for millimeter wave radiometer test

Examples

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Embodiment

[0032] combine figure 1 , an equivalent device for millimeter-wave space attenuation in this embodiment, including a microwave anechoic chamber, a millimeter-wave radiometer detector, a dielectric attenuation module, a target jammer, a three-dimensional test platform, a detector output signal acquisition module, a chopper wheel, Chopper wheel control and speed monitoring module and test platform servo control module; its working principle is: first, the host computer sends commands to control the work of each module, controls the chopper wheel and platform servo to adjust the positional relationship between the jammer and the millimeter wave detector, To ensure that the millimeter wave detector can receive the electromagnetic wave signal from the jammer. The millimeter wave detection test at different distances can be realized by changing the attenuation medium board, and the signal received by the detector is collected by the millimeter wave detector signal acquisition module...

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Abstract

The invention discloses an equivalent device for millimeter wave radiometer test. The device comprises a microwave anechoic chamber, a millimeter wave radiometer detector, a dielectric attenuation module, a target jammer, a three-dimensional test platform, a detector output signal acquisition module, a chopper wheel, a chopper wheel control and rotation speed monitoring module and a test platform servo control module. The transmitting antenna of the target jammer, the chopper wheel, the dielectric attenuation module and the receiving antenna of the millimeter wave radiometer detector are on the same straight line. The target jammer is arranged on the three-dimensional test platform. The test platform servo control module is used for controlling the height, the pitch angle and the azimuth angle of the target jammer through the three-dimensional test platform. The chopper wheel control and rotation speed monitoring module is used for controlling the rotation speed of the chopper wheel. The detector output signal acquisition module is used for acquiring a millimeter wave signal detected by the detector. According to the invention, static and dynamic performances of a millimeter wave radiometer can be tested; the detection cost of a product is reduced; and the test efficiency is improved.

Description

technical field [0001] The invention relates to passive millimeter-wave testing technology, in particular to an equivalent device for millimeter-wave radiometer testing. Background technique [0002] The millimeter-wave transmission loss in the atmosphere is greater than that of microwaves, but the millimeter-wave radiometer relies on high-gain antennas to effectively offset the loss of millimeter-wave transmission in the atmosphere. At the same time, the spatial resolution of the millimeter-wave high-gain antenna is higher, showing its unique advantages . The millimeter-wave radiometer detection based on ground-based, space-based, space-based and other carrier platforms has been developed rapidly. [0003] Due to the high frequency band of the millimeter wave and the specificity of the millimeter wave radiometer, there is currently no dedicated instrument to test the static performance parameters of the millimeter wave radiometer. Considering the particularity of the miss...

Claims

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Application Information

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IPC IPC(8): G01S7/38G01S7/40
CPCG01S7/38G01S7/40
Inventor 彭树生宋俊志李冬吴礼
Owner NANJING UNIV OF SCI & TECH
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