Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1972-10-05
1978-08-08
Tubbesing, T.H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5DP, 343 171PF, 343100CL, G01S 744
Patent
active
041060199
ABSTRACT:
A system for measuring unambiguous target range for targets at high velocities in which target range and doppler frequency data from three sequential transmission dwells of radar returns are stored, each dwell having a different pulse repetition frequency (PRF). The dwell storage unit which includes three sets of dynamic registers is loaded and unloaded serially with respect to range and supplied to a 17 path doppler frequency correlator. After the three dwell storage registers have been loaded with a basic PRF plus jitter, the range interval unfolding is performed by a recirculation process in each of the registers. During recirculation the data is applied to a correlation unit, the purpose of which is to insure that the velocity of the target satisfies a 17 path algorithm across three adjacent dwells in at least one of five range azimuth profiles or paths. Because the same target velocity may cause outputs in adjacent doppler filters due to PRF jitter, the correlation utilizes a criteria that for all three possible PRF sequences the filter numbers across the three range bins and paths must be within one of each other. As the filter correlation function is capable of multiple path selection the filter path outputs are priority selected to produce a valid target. The final output from the system is a verification that the data in the three range bins of interest satisfies the seventeen path correlation algorithm formed of three dwells and three adjacent range bins with a possible PRF jitter of one filter in each range bin.
REFERENCES:
patent: 3532867 (1970-10-01), Ricketts, Jr. et al.
patent: 3727215 (1973-04-01), Wilmot
Alexander Thomas F.
Griff Gary J.
Adam Walter J.
Hughes Aircraft Company
MacAllister W. H.
Tubbesing T.H.
LandOfFree
Range resolving doppler radar system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Range resolving doppler radar system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Range resolving doppler radar system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-922270