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Multipurpose aircraft radio altitude simulator detection method

A technology of radio altitude and detection method, applied in radio wave measurement system, altitude/level measurement, reflection/re-radiation of radio waves, etc., to achieve the effect of high promotion and application value

Pending Publication Date: 2020-04-10
AVIC GUIZHOU AIRPLANE
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The method is simple to operate, has a large range of detection values ​​and high accuracy, and can solve the problem of measurement and calibration of radio altitude analog values ​​of current multi-purpose aircraft radio altitude simulators

Method used

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  • Multipurpose aircraft radio altitude simulator detection method

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Embodiment Construction

[0025] The present invention is achieved through the following technical solutions.

[0026] The multi-purpose aircraft radio altitude simulator detection method, the method uses the signal source 1 to provide a certain pulse modulation signal, the signal is distributed through the power divider 2, and one path is output by the adjustable attenuator 5 and the detector, and sent to the dual channel One signal input end of time / frequency counter 7; The other way is sent into another signal input end of dual-channel time / frequency counter 7 through radio altitude simulator 3, detector detection output; Dual-channel time / frequency counter 7 measures two The delay time of the channel signal can be used to calculate the altitude analog value of the radio altitude simulator.

[0027] Include the following steps:

[0028] Step 1, connect the signal source 1 to the power divider 2, and the power divider 2 is connected to the adjustable attenuator 5 and the fixed attenuator 10 respecti...

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Abstract

The invention discloses a multipurpose aircraft radio altitude simulator detection method, which comprises the following steps: a signal source is adopted to provide a certain pulse modulation signal,the signal is distributed by a power divider, and one path of the signal is detected and output by an adjustable attenuator and a detector and is sent to one signal input end of a dual-channel time / frequency counter; the other path is detected and output by a radio altitude simulator and a detector, and is sent to the other signal input end of the dual-channel time / frequency counter; and the dual-channel time / frequency counter measures the delay time of the two paths of signals, so that the altitude analog quantity value of the radio altitude simulator can be calculated according to the delaytime. The method can achieve a high-accuracy detection effect on the time delay parameters of the radio altitude simulator, and has high popularization and application value in measurement and calibration of multipurpose aircraft radio altitude special detection equipment and the like.

Description

technical field [0001] The invention belongs to the technical field of measurement of airborne detection equipment, and in particular relates to a measurement detection method of a multipurpose aircraft radio altitude simulator. Background technique [0002] The multi-purpose aircraft radio altitude simulator is an important device for testing the airborne radio altimeter, which can provide a certain required simulation environment for the radio altitude value. Its radio height measurement simulation environment is mainly composed of microwave delay lines, and according to the performance structure of microwave delay lines, it is divided into fixed type and adjustable type, mainly using coaxial cable structure, surface acoustic (bulk) wave structure, FPGA structure and Delay technology such as microwave fiber structure is realized. [0003] At present, in the measurement and calibration of the radio altitude simulator, the technical methods used to detect the analog value o...

Claims

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Application Information

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IPC IPC(8): G01C25/00G01C5/00G01S13/10
CPCG01C25/00G01C5/005G01S13/103
Inventor 张应猛苗勇
Owner AVIC GUIZHOU AIRPLANE
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