TELEMETRY DIGITAL SYSTEM DESIGN USING LINEAL CODING FOR ANALOG SIGNALS

Abstract

This paper describes the design elements, construction and performance of a digital telemetric system. The system consist of five input channels that are processed and transmitted simultaneously achieving a dynamic range of 72 dB. A linear block coding approach with BCH(7,4) is used to detect two error bits and correct one of them. FSK modulation scheme is used to transmit between two ends located on line of sight 50 Km apart. The system is used in geophysical exploration to transmit analog signals with 50 Hz bandwidth from a remote station to a base station. Both stations are movile and constitute the two ends of the communication system.