SHOCK-HARDENED, HIGH FREQUENCY, PCM SYSTEM WITH MEMORY FOR EARTH PENETRATOR STUDY APPLICATIONS

Abstract

Increasing data requirements for earth penetrating vehicles have necessitated the design of a new digital telemetry system with greater signal frequency response, higher resolution, and more memory capacity than used previously. The new system encodes data into 8 bit digital words at a rate of 3.2 megabits per second and stores the data into a 640 Kbit CMOS memory for readout after the recovery of the penetrating vehicle. This paper describes the penetrator program and the new telemetry system developed for it.