THE DESIGN OF AN IMPROVED RECEIVER FOR ROCKET EXPERIMENTS.
Abstract
In an ionospheric sounding experiment employing the Nike-Apache rocket electron density and collison frequency in the lower ionosphere are studied by means of rocket receiver signal frequency and strength as the rocket penetrates the ionosphere. The receiver used is an amplitude-modulated superheterodyne unit capable of receiving a signal strength of 5 microvolts/meter and amplifying it to a 5 volt level for the telemetry unit input. The problems encountered in this receiver are considered. They are: Oscillator injection voltage amplitude into the mixer unit in very critical, causing the mixer to be unreliable; The intermediate frequency strip develops spurious oscillators; Present receiver bandwidth of 10 kc. is too wide since broadcast land signals cause interference during test.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1965
- Accession Number
- AD0624654
Entities
People
- Frank David Szachta
Organizations
- University of New Hampshire