Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1983-09-23
1986-03-25
Tarcza, Thomas H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
G01S 1328
Patent
active
045786771
ABSTRACT:
A pulse expander-compressor for magnifying the range-doppler-coupling effs that accompany the use of frequency-modulation derived phase coded pulse compressors in order to accentuate the doppler-coupling velocity effects on target echoes. The foregoing magnification is accomplished by generating a doppler tolerant polyphase coded waveform with equal time spaces inserted between successive code elements in order to make the time difference between the first and last code elements independent of the number of code elements involved. These equal spaces may be variable in order to allow any desired target radial velocity to produce a phase difference between the first and last code elements of 2.pi..
The foregoing may be implemented in a pulse expander-compressor by replacing each delay t.sub.c in the compressor input-signal expansion circuit by a set of N delay elements t.sub.c, and a set of N associated switches, the switches permitting each element in the set to be connected or bypassed, as desired. The time-dispersion circuit for the compressor is likewise modified by replacing each of its Mt.sub.c delays by a set of N delay elements Mt.sub.c, each of which is independently connectable or bypassable.
REFERENCES:
patent: 3852746 (1974-12-01), Lowenschuss et al.
patent: 4005417 (1977-01-01), Collins
patent: 4047173 (1977-09-01), Miller
patent: 4132991 (1979-01-01), Wocher et al.
patent: 4156876 (1979-05-01), Debuisser
patent: 4203112 (1980-05-01), Wocher et al.
patent: 4237461 (1980-12-01), Cantrell et al.
patent: 4328495 (1982-05-01), Thue
patent: 4373190 (1983-02-01), Lewis et al.
patent: 4524362 (1985-06-01), Lewis
Beers Robert F.
Ellis William T.
Hellner Mark
Sheinbein Sol
Tarcza Thomas H.
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