Inventors:
Roger K. Cernius - El Cajon CA
Don M. French - El Cajon CA
Paul A. Singer - Santee CA
Donald J. Adrian - Leucadia CA
Donald I. Parsons - San Diego CA
Assignee:
The United States of America as represented by the Secretary of the Navy - Washington DC
International Classification:
H03B 2900
Abstract:
A reliable, repeatable and stable VLF/LF atmospheric noise generator is cble of producing noise with known or given amplitude probability distributions and temporal characteristics such as pulse duration, pulse spacing, pulses per unit time and the discharge fine structure between pulses. A pseudo random noise carrier signal is multiplied in a plurality of digital-to-analog converters with the discharge envelopes created in a plurality of interconnected discharge envelope generators. The discharges are representative of cloud-to-ground discharges, intercloud discharges, the discharge rate, strokes per discharge and the discharge fine structure. All of the discharges are readily modifiable by suitably reprogramming operatively coupled memories and microprocessors in accordance with selected loading instructions.