System and method for generating radio analog altitude using synchronous signal excitation

A radio altimeter and synchronization signal technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, utilization of re-radiation, etc. The effect of testing efficiency, improving reliability and saving equipment cost

Active Publication Date: 2019-01-11
国营芜湖机械厂
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose a system and method for generating radio analog altitude using synchronous signal excitation, which solves the problem of the traditional radio altimeter analog altitude test. The problem of high cost, frequent replacement of cables, and inability to continuously test the height

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  • System and method for generating radio analog altitude using synchronous signal excitation
  • System and method for generating radio analog altitude using synchronous signal excitation
  • System and method for generating radio analog altitude using synchronous signal excitation

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Embodiment Construction

[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0025] Such as figure 1 The connection diagram of the traditional simulated altitude test system shown:

[0026] The radio altimeter launch interface is connected to the attenuator and then connected to different lengths of radio frequency cables or microwave delay lines to simulate the process of radio waves propagating in the air in actual work, and the radio waves after passing through the radio frequency cables or microwave delay lines are transmitted to the radio altimeter The receiving port of the radio altimeter is connected to the second-wire detector, and the second-wire detector measures the pulse width time between sending and receiving signals, and the pulse width time increases with the increase of the simulated height of the test. In the traditional measurement method, di...

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Abstract

The invention relates to a system and method for generating a radio analog altitude using synchronous signal excitation. The system comprises a radio altimeter, an attenuator, an analog signal generator, and a second-line detector, wherein a signal transmitting interface of the radio altimeter returns to a receiving interface of the radio altimeter after being connected to the attenuator, a synchronous signal transmitting interface of the radio altimeter is connected to the analog signal generator, and the analog signal generator is connected to the second-line detector after converting the synchronous signal into a video pulse signal. The analog signal generator is used to process the synchronizing signal, output a video signal of analog height, and transmit the signal to the second-linedetector, which can be continuously adjusted in the height range of 0-8000 m. The system and method for generating a radio analog altitude using synchronous signal excitation save the cost of test equipment, can realize the continuously adjustable test with high variation, and improve the work efficiency.

Description

technical field [0001] The invention relates to the field of radio altimeter testing, in particular to a system and method for generating radio analog altitude by using synchronous signal excitation. Background technique [0002] The radio altimeter is an important ground-level reference device in the aircraft control system. Its function is to measure the real height of the aircraft from the ground. It is composed of a transceiver, antenna and indicator. It transmits radio waves to the ground and receives echoes to obtain propagation Time thus gains height. [0003] The traditional radio altimeter simulates the height by connecting different lengths of radio frequency cables to simulate different heights or using different microwave delay lines to simulate different heights for testing. The defect of the above test method is that it cannot simulate all heights from 0 to 6000m (with an accuracy of 0.5m), cannot continuously change the height, and the cost of equipment inves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/10
CPCG01S7/40G01S13/10
Inventor 李滨许海沐昌兴徐江袁乐
Owner 国营芜湖机械厂
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