Navigational and collision avoidance apparatus

Details Navigational and collision avoidance apparatus Navigational and collision avoidance apparatus

1972-04-13

1976-09-14

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343112CA, G01S 744, G01S 902

Patent

active

039810089

ABSTRACT:
Marine surface radar processing equipment provides digitized target range pulses at a plurality of ranges, and includes target evaluation apparatus that comprises target leading edge signal means providing a target leading edge signal pulse at successive azimuths, and target trailing edge signal means providing a target trailing edge signal pulse at successive azimuths and initially separated in range from the target leading edge signal. The edge signal pulses describe a target envelope. The coincidence in range of a leading edge signal pulse and a trailing edge signal pulse provides a target envelope end recognition signal. The target evaluation apparatus further comprises discriminating means responsive to a maximum number of target leading edge signal pulses at successive azimuth intervals. The maximum number decreases at successively increasing ranges. The discriminating means discriminates between landmass targets of greater than a predetermined actual length in azimuth representing a maximum ship length, and possible ship targets of less than the predetermined actual length in azimuth. The discriminating means provides a discriminated target output signal responsive to possible ship targets of less than the predetermined length for display of ship targets with their speed and course vectors.

REFERENCES:
patent: 3151322 (1964-09-01), Hildebrandt
patent: 3353177 (1967-11-01), Wilmot
patent: 3383677 (1968-05-01), Baum et al.
patent: 3386091 (1968-05-01), Wilmot et al.
patent: 3403396 (1968-09-01), Van Popta et al.
patent: 3571479 (1971-03-01), Horattas

Affiliated with

Also associated with

Rating

Navigational and collision avoidance apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Navigational and collision avoidance apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Navigational and collision avoidance apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1029435