A detection method for digital signal processing module of airborne interrogation machine

Abstract

The invention provides a detection apparatus and method of a digital signal processing module of an airborne interrogator. The detection apparatus comprises a test master. The test master is connected with a backboard of a PXI (PCI extensions for Instrumentation) case through hardware functional modules with standard PXI bus interfaces. Each hardware functional module comprises a master control computer, a bus card, a 1553B card, a comprehensive interface card, a universal meter card and an oscilloscope card. The detection apparatus further comprises a test fixture and a keyboard display module; the test fixture comprises a power module, a bottom board adapter plate and a structural cavity; the structural cavity is used for supporting; the power module powers a test-piece to be tested, as required and outputs the power through the bottom board adapter plate; the keyboard display module is connected with the master control computer; the test-piece to be tested is mounted on the test fixture and is connected with a host through a cable. The detection apparatus and method has the advantages that the size is small, the cost is low, testing can be performed for functions, performances and the like of the digital signal processing module of the airborne interrogator, and device-level fault localization can be achieved.

Description

technical field [0001] The invention relates to a detection method for a digital signal processing module of an airborne interrogation machine, in particular to a special detector and a detection method for the internal digital signal processing module of the airborne interrogation machine which are suitable for the field of aerospace. Background technique [0002] The airborne interrogator is one of the important components of the airborne interrogation and response system, and the other important component is the airborne transponder. After the interrogator makes an inquiry according to the specified coding format and use requirements, it waits to receive the response signal from the airborne transponder (air-to-air) or ship-borne transponder (air-to-ground), detects and decodes the response signal, and identifies the transponder’s carrier. The identity of the aircraft provides the basis for the corresponding response of the pilot or automatic surveillance system. These i...

AI Technical Summary

Problems solved by technology

[0004] However, the existing test methods mainly use special and general-purpose hardware function modules to build a test environment, and then perform automatic tests through bus control.

The number of test instruments is large, the volume is high, and the cost is high, and some special instruments are subject to purchase restrictions; component-level fault location is limited by the fact that there are few test points reserved for the module to be tested, and many characteristic signals need to be measured directly on the chip pins, requiring testers Follow the software prompts to manually troubleshoot step by step, but it is not yet possible to do it automatically

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