Determining distance > With pulse modulation > Combined with determining direction > With crt display > Ppi type > Patents

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Class Information
Number: 342/144
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Determining distance > With pulse modulation > Combined with determining direction > With crt display > Ppi type
Description: Subject matter wherein the display represents the signal as a bright spot, with range indicated by the distance of the spot from the center of the screen and the bearing by the radial angle of the spot.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
5455591	Precision high speed perspective transformation from range-azimuth format to elevation-azimuth format	Oct. 3, 1995
4596987	PPI display apparatus	Jun. 24, 1986
4281327	Range corrector circuit for a bistatic passive radar display	Jul. 28, 1981
4023166	High power low loss nonresonant filter system	May. 10, 1977