Record Display for the EPA National Library Catalog


Main Title LORAN-C Tetroon Transponder and Tracking System.
Author Clawson, K. L. ; Pound, E. F. ; Dickson, C. R. ; Start, G. E. ;
CORP Author National Oceanic and Atmospheric Administration, Idaho Falls, ID. Air Resources Lab. ;E.F.P. Co., Logan, UT.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1986
Report Number EPA/600/3-86/060;
Stock Number PB87-116687
Additional Subjects Tracking(Position) ; Transponders ; Converters ; Telemetry ; Recievers ; Transmitters ; Electric batteries ; Data aquisition systems ; Navigator ; Balloons ; Tetroons
Library Call Number Additional Info Location Last
NTIS  PB87-116687 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 65p
An advanced system for tracking multiple regional scale Lagrangian markers was developed. The system consists of a miniature tetroon-borne transponder and a small computerized receiving station capable of providing continuous real-time data on tetroon location (latitude/longitude) and altitude. The transponder consists of a telemetry subsystem, a LORAN-C receiver, and a 403 MHz transmitter. The telemetry subsystem measures atmospheric temperature and pressure, converts the data into frequencies, and then transmits these data together with a transponder ID frequency to a remote receiving station. Multiple tetroons can be discriminated at a range of up to 160 km. The transponder weighs less than 365 g and can be flown on a cub m tetroon. Battery life is 2 to 6 days. The data acquisition system consists of an FM receiver, a LORAN-C navigator, a frequency to digital converter, and a microcomputer. The receiving station can be ground-based or mounted in a single engine aircraft.