||LORAN-C Tetroon Transponder and Tracking System.
Clawson, K. L. ;
Pound, E. F. ;
Dickson, C. R. ;
Start, G. E. ;
||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.
Electric batteries ;
Data aquisition systems ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||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.
||Prepared in cooperation with E.F.P. Co., Logan, UT. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
|NTIS Title Notes
|PUB Date Free Form
||PC A04/MF A01