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PPI Display for radar and synthetic symbology

  • US 4,224,621 A
  • Filed: 06/25/1979
  • Issued: 09/23/1980
  • Est. Priority Date: 06/25/1979
  • Status: Expired due to Term
First Claim
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1. In a radar system including an antenna scannable in azimuth for receiving radar return data, apparatus for displaying said radar return data, comprisingradar data memory means for storing radar return data corresponding to a complete scan of said antenna,display means including a display face,rotating scan generation means coupled to said display means for generating a PPI display scan with respect to said display face rotating at a rate independent of the azimuth scanning rate of said antenna,addressing means for addressing said radar data memory means in synchronism with the generation of said PPI display scan for providing said radar return data stored therein, andmeans for applying said stored radar return data addressed by said addressing means to said display means for displaying said addressed radar return data in synchronism with said rotating scan.

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