THE DESIGN OF A FOUR-CHANNEL TELEMETRY SYSTEM FOR USE IN THE HASP METEOROLOGICAL RADIOSONDE SET,
Abstract
Presented herein is a description of a simple and economical four-channel telemetry system for use in the HASP meteorological radiosonde. The need for four channels evolves from the recent development of a continuous pressure sensor. The temperature and reference channel remains as in the present system, along with the addition of an atmospheric pressure and chamber temperature reference channel. The four-channel circuitry is designed to sample information following an asymmetrical sequence ab, ac, ad, etc. The numerical value (a) represents the temperature channel, which is designed to have a higher sampling rate. Basically, the circuit retains the present design of the two-channel HASP system, however, with the addition of a transistorized three-stage pulse stepper that controls three iterative transistor switching networks. A simple gate is utilized to inhibit all remaining channels during the transmission of the air temperature. An analysis is presented of the four-channel system with a discussion of the experimental results obtained over an environmental temperature range from -60 degrees C to 100 degrees C. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 25, 1964
- Accession Number
- AD0439848
Entities
People
- George A. Gadbors
Organizations
- Naval Ordnance Laboratory