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Method for testing sensitivity of airplane radio compass receiver

A technology of receiver sensitivity and radio compass, applied in the field of aircraft radio compass receiver sensitivity test, can solve the problems of lack of test methods, narrow professional surface of aircraft finished products, etc., and achieves fast test speed, good test condition consistency, and high test accuracy. Effect

Inactive Publication Date: 2013-08-07
SHAANXI AIRCRAFT CORPORATION
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  • Description
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AI Technical Summary

Problems solved by technology

Coupled with the narrow and highly professional characteristics of finished aircraft products, in the absence of testing methods, we can only choose the special testing equipment provided by the manufacturer.

Method used

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  • Method for testing sensitivity of airplane radio compass receiver
  • Method for testing sensitivity of airplane radio compass receiver

Examples

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example

[0028] The parameter setting of this method will be introduced below by taking the test of the receiving sensitivity of the compass receiver 501 at the frequency point 1057.5 kHz as an example.

[0029] 1. Initialization: set the sampling rate of the data acquisition card 402 to 100kbps, and set the channel to the actually connected acquisition channel number, such as channel 1. The collected voltage range and resolution can be set to the default value of the board. Set the communication address between the GPIB card 403 and the high-frequency signal source 301 as the "talk" address of the high-frequency signal source 301 to ensure that the two can communicate normally. The sending rate of the ARINC429 bus card 404 is set to 12.5kbps, and the sending channel number is consistent with the actual connection.

[0030]2. Simulation: send 32-bit data word: 0x6415E858 with the related function of ARINC429 bus card 404. The data indicates that the frequency of the compass receiver ...

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Abstract

The invention belongs to the technical field of aviation tests, and especially relates to a method for testing the reception sensitivity of an airplane radio compass receiver. The method utilizes an airplane radio compass ground simulation and test system, and the system comprises an integrated tester, and a power supply module, an excitation module, a display test module and a tested object which are respectively connected with the integrated tester. The method can realize the tests of the sensitivity of the radio compass receiver by a special apparatus on a general instrument, and allows a novel compass control box adopted by a certain type airplane to be stimulated without influencing the tests of the relevant performances of the compass receiver under a matching control box lack condition. The method shields tedious setting and operating steps for a common test personnel, and a fixed test flow guarantees the repeatability of the tests. The method has the advantages of realization of the automatic completion of the test of all parameters through software, high test precision, good consistency of the test conditions, and rapid test speed.

Description

technical field [0001] The invention belongs to the technical field of aviation testing, in particular to a method for testing the sensitivity of an aircraft radio compass receiver. Background technique [0002] Due to the particularity of finished aircraft products, the relevant ground testing equipment is usually a special instrument, and these test equipment often have poor scalability. There are many kinds of parameter settings, and operators must undergo professional training to operate smoothly. Once a certain parameter is forgotten or set incorrectly, it will lead to unusable situations; the simulation of the radio compass control box is based on the old binary code control box, which cannot be used for certain parameters. Simulate the new control box installed on the model aircraft; there are a large number of special circuits or special instruments in the testing equipment. Bring great trouble to the use and maintenance afterwards. Existing radio compass detection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C17/38
Inventor 周懿梁欣刘雯余军强毛森鑫李朦
Owner SHAANXI AIRCRAFT CORPORATION
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