OSCAR JOE KAELIN
Pilots at Ann Lee Rd, Harvard, MA
License number
Massachusetts A0979513
Issued Date
Aug 2015
Expiration Date
Aug 2016
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
109 Ann Lee Rd, Harvard, MA 01451
Professional information
Noise Adaptive Correlator
US Patent:
4234883, Nov 18, 1980
Filed:
Sep 26, 1974
Appl. No.:
5/509708
Inventors:
Oscar J. Kaelin - Harvard MA
Richard H. Mathews - Sudbury MA
Richard H. Mathews - Sudbury MA
Assignee:
GTE Sylvania Incorporated - Stamford CT
International Classification:
H04B 700
US Classification:
343100CL
Abstract:
Time-correlation apparatus for collecting correlation data when the noise level is low and inhibiting the collection of correlation data when the noise level is high without losing valid correlation data which has already been obtained. An incoming signal is checked for data pulses during each correlation measurement pulse of a synchronizing signal. The correlation measurement pulses are counted by a first counter, and the coincidences of data pulses and correlation measurement pulses are counted by a second counter. A noise monitor samples the incoming signals 100 times during each of a continuous series of noise analysis periods and counts the number of times the signal (assumed to be noise) exceeds a predetermined threshold. A high noise signal is generated if the threshold is exceeded 30 or more times, and a low noise signal if it is exceeded less than 30 times. A low noise signal at the end of a noise analysis period causes the counts in the first and second counters to be loaded into first and second buffers, respectively.