Communications: directive radio wave systems and devices (e.g. – Determining distance – With correlation
Patent
1991-02-08
1992-04-28
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With correlation
342130, 342163, G01S 1326, G01S 1352
Patent
active
051092310
ABSTRACT:
A radar system comprises a transmitter which essentially continuously transmits a modulated carrier wave signal and a receiver for receiving the carrier wave signal reflected at an object (echo signal). The carrier wave signal is modulated with a code-generating signal whose code frequency is determined for the range resolution of the radar. The code-generating signal is such that one bit in the code has a duration which is several times longer than the period of the carrier wave signal and several bits of the code form a block which is obtained by modulation of a carrier wave with constant frequency. The frequency of the carrier wave is changed between blocks so that the transmitter sends a block with a carrier wave frequency which is different from the carrier wave frequency or frequencies which the receiver is set up to receive. The receiver stores the transmitted code and correlates it with the received signal. When code correspondence (synchronism) is obtained this corresponds to a definitive position of the echo response reflector. By changing frequency between blocks different "types of radar" can be dedicated to different range zones, and a radar system is obtained which is adapted to cope with modern threat environments. The radar is difficult to spot, difficult to define and to disturb.
REFERENCES:
patent: H767 (1990-04-01), Kretschner, Jr. et al.
patent: 3878525 (1975-04-01), Alpeis
patent: 4078234 (1978-03-01), Fishbein et al.
patent: 4142189 (1979-02-01), Gleason
patent: 4197540 (1980-04-01), Riggs et al.
patent: 4241347 (1980-12-01), Albanese et al.
patent: 4328495 (1982-05-01), Thue
patent: 4338604 (1982-07-01), Petitjean
Aktiebolaget Bofors Electronics
Barron Jr. Gilberto
LandOfFree
Radar arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radar arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1251521