Accession Number : AD0779697

Title :   A Programmable Wideband Pseudorandom Coded Modem Using Surface Acoustic Wave Devices.

Descriptive Note : Final rept. Nov 71-Oct 73,


Personal Author(s) : Allison,Ronald ; Maher,R. A. ; Bell,D. T. , Jr

Report Date : MAR 1974

Pagination or Media Count : 156

Abstract : The report contains results of a study in an experimental spread-spectrum communication and IFF system using surface-wave devices. The system uses acoustic surface-wave devices to generate and process signals with bandwidths of 50 MHz and time bandwidth products of about 1000. Coding techniques employed allow a certain degree of electronic code programmability, address verification, and ability to transmit digital data. Overall intent of this program was to provide a possible technique for application in the general spread-spectrum/CNI (Communication, Navigation, and Identification) arena. (Author)

Descriptors :   *Modems, *Spread spectrum, Acoustic equipment, Surface waves, Broadband, Communication and radio systems, IFF systems, Signal processing

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE