Accession Number : ADD003954
Title : Doppler Radar for Distinguishing Between Approaching and Receding Targets and Having Increased Frequency Response.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C
Personal Author(s) : Rittenbach,Otto E
Report Date : 15 Feb 1977
Pagination or Media Count : 8
Abstract : CW is beamed continuously by a radar and is sampled continuously in the radar; the radar continuously senses reflections that are returned to the radar. Only if the distance to a reflecting target is changing significantly per unit time is there an output generated; the output is a positive DC voltage if the distance is closing and a negative DC voltage if the distance is opening. An annunciator arrangement responds to the output DC voltage. Reflection frquency energy is mixed with a sampling of the CW to obtain the difference frequency. At the same time, reflection frequency energy is mixed with +90 degrees phase advanced sampling of the CW to obtain the difference frequency.
Descriptors : *Patents, *Continuous wave radar, *Doppler radar, Target discrimination, Frequency response, Voltage
Subject Categories : Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE