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Automatic test system of digital transmitting-receiving assembly

A technology of automatic test system and transceiver components, applied in radio wave measurement systems, instruments, etc., can solve the problems of non-coherent state, unable to measure noise figure, etc., achieve high practicability, high test efficiency, and reduce the effect of impact

Inactive Publication Date: 2018-03-23
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology

[0003] With the continuous increase of the scale of the radar front, the current digital transceiver components need to use optical fiber as the synchronization signal and control command transmission, baseband data return and local oscillator signal transmission interface, and the traditional test system will cause the measured digital transceiver components In a non-coherent state, it is impossible to effectively measure the noise figure of the digital transceiver component under test in a fully coherent state

Method used

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  • Automatic test system of digital transmitting-receiving assembly

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Embodiment Construction

[0029] Such as figure 1 As shown, the digital transceiver assembly automatic test system provided by the present invention includes the digital transceiver assembly under test, the optical fiber synchronous transceiver equipment connected with the digital transceiver assembly under test, and the optical fiber synchronous transceiver equipment connected with the digital transceiver assembly under test and the optical fiber synchronous transceiver equipment. , a program-controlled noise source for providing broadband noise signals, an optical local oscillator signal generating device for providing optical local oscillator signals, and a program-controlled DC power supply for powering digital transceiver components under test;

[0030] The optical fiber synchronous transceiver device is used to receive the first baseband echo data sent by the digital transceiver component under test when the broadband noise signal is not received, and calculate the first noise power according to t...

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Abstract

The invention discloses an automatic test system of a digital transmitting-receiving assembly. A fiber synchronous transmitting-receiving device is used to receive a first baseband echo data emitted by the tested digital transmitting-receiving assembly under the condition that broadband noise signals are not received and calculate the first noise power according to the first baseband echo data, receive a second baseband echo data emitted by the tested digital transmitting-receiving assembly under the condition that broadband noise signals are received and calculate the second noise power according to the second baseband echo data, and calculate a noise coefficient of the tested digital transmitting-receiving assembly according to the first noise power and the second noise power. The systemcan measure the noise coefficient of the digital transmitting-receiving assembly under the full coherent condition, and is highly practical.

Description

technical field [0001] The invention relates to the field of radar testing devices, in particular to an automatic testing system for digital transceiver components. Background technique [0002] The digital transceiver component is an important part of the digital array radar, and its performance index directly affects the performance, power and cost of the radar. Usually a digital array radar is composed of dozens or even hundreds of digital transceiver components. Therefore, when mass producing digital transceiver components, multiple transmission channel indicators for digital transceiver components are required, such as transmission power, spurious suppression, and harmonic suppression. , local oscillator suppression, pulse top drop, transmit channel isolation, etc.; multiple receive channel indicators, such as receive gain, attenuator control range and accuracy, receive bandwidth, image frequency suppression, instantaneous dynamic range, receive channel isolation, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/4004
Inventor 陈利彬吴来萍房爽门涛李宁李玉爽
Owner BEIJING INST OF RADIO MEASUREMENT
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