Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1984-06-12
1986-06-24
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 16R, 315378, G01S 504
Patent
active
045969876
ABSTRACT:
A PPI display apparatus allows a radar image or bearing marker to be displayed on a circular CRT screen through sweeping on the basis of a plan position indicator system. In the apparatus, the generation of a radar antenna angle signal, generation of a bearing angle signal representing the angle of a bearing cursor, generation of an antenna angle signal corrected by adding a deflection angle to the antenna angle, and generation of sine and cosine signals corresponding to the antenna angle or bearing angle are all carried out through digital processing.
REFERENCES:
patent: 3462639 (1969-08-01), French
patent: 3500402 (1970-03-01), Huele et al.
patent: 3761928 (1973-09-01), Greutman
patent: 3858085 (1974-12-01), Dildy, Jr. et al.
patent: 4327312 (1982-04-01), King et al.
Arima Kiyoshi
Numaho Yoshio
Ogawa Tetsuro
Okada Hiroshi
Blum Theodore M.
Cain David
Tokyo Keiki Company Ltd.
LandOfFree
PPI display 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 PPI display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PPI display apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2086900