Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Patent
1990-02-05
1991-07-16
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
G01S 722
Patent
active
050328425
ABSTRACT:
A detection system uses a radar apparatus for displaying conditions of the surrounding geographical and an area marker defining a selected geographical area. The area marker and conditions are displayed on an indicator. If a target is determined to be in the area marker, an alarm is activated. The area marker is indicated by specifying only two points on the screen of the indicator.
REFERENCES:
patent: 4224619 (1980-09-01), Bean et al.
patent: 4281326 (1981-07-01), Anderson
Kiya Yoshiyuki
Tanigaki Hidetoshi
Furuno Electric Co. Ltd.
Hellner Mark
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