Title: Electronic automatic plotter

Abstract: A system for electronically producing and displaying target position history trails in a PPI radar. Digital target positions within a selected sector zone from all targets meeting predetermined amplitude and duration criteria are stored in a memory for single azimuth scans at predetermined intervals. The data from the scans are interleaved and read out of the memory for display with the real time PPI targets. When the memory is filled, the oldest plots from each target are dropped to make room for new plots.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Bryden, Joseph E. (Framingham, MA, US)
Larsen, Ole J. (Birkeroed, DK)
O'Callaghan, Desmond (Virum, DK)

Application Number: 934147
Filing Date: 1978-08-16
Publication_date: 1980-06-17
Assignee: Raytheon Company (Lexington, MA)
Primary Class(es): 342/182 342/195
Other Classes:
US Patent Ref:

3151322	Sep, 1964	Hildebrandt	343/5.
3403396	Sep, 1968	Van Popta et al.	343/5.
3571479	Mar, 1971	Horattas	343/5.
4068233	Jan, 1978	Pease et al.	343/5.

Other Refs:
Primary Examiner: Hubler, Malcolm F.
Assistant Examiner:
Attorney: Bartlett; M. D., Pannone; J. D., Arnold; H. W.