A real time microcontroller-based clipped auto- and cross-correlator with applications in LTV

Author

Tsalapatas, H.A. ; Moraitis, C.S.

Author_Institution

Dept. of Comput. Eng., Patras Univ., Greece

fYear

1989

fDate

18-21 Sep 1989

Firstpage

152

Lastpage

158

Abstract

An inexpensive and versatile correlator for quasi-real-time processing in laser transit velocimetry (LTV) is presented. The signals delivered by the photomultipliers are clipped before processing, thus allowing for the calculation of correlation values through logical operations. The second signal is shifted within an appropriately configured shift register. Control and timing signals are produced by software and directed to individual components of the system through appropriate memory-mapped latches. Thus, the programmer has easy access in the configuration and the operation of the device, which can be modified by software. The whole device is controlled by an INTEL 8396 microcontroller and can be easily interfaced to personal computers

Keywords

computerised control; computerised instrumentation; computerised signal processing; correlation methods; laser velocimetry; INTEL 8396 microcontroller; auto-correlator; cross-correlator; laser transit velocimetry; memory-mapped latches; personal computers; photomultipliers; quasi-real-time processing; Application software; Autocorrelation; Correlators; Fluid dynamics; Microcomputers; Microcontrollers; Photomultipliers; Redundancy; Shift registers; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation in Aerospace Simulation Facilities, 1989. ICIASF '89 Record., International Congress on

Conference_Location

Gottingen

Type

conf

DOI

10.1109/ICIASF.1989.77668

Filename

77668