Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1975-10-16
1977-08-16
Buczinski, S.C.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
3401461BA, 343 5DP, 343 65R, 343 15, G01S 902, G06F 1100
Patent
active
040429237
ABSTRACT:
A radar position locator system uses a mobile and at least two stationary transceivers. The signals are validated by being stored and compared with previously received signals. If the comparison indicates that the received signal is within a range of a reasonably possible change, as compared to the previously received signals, it is accepted. Otherwise, it is rejected and the memory circuit which stored the signal for validation is backed up to the last previously stored valid signal. The stationary transceivers function somewhat as a surveyor's bench mark. Each transceiver is individually identified by a coded stream of radar pulses, as, for example, a stream of pulses transmitted at a predetermined transceiver identifying pulse repetition rate. A selected number of validated radar signals are transmitted between the mobile and stationary transceivers. The round trip transmission times of several of these signals are averaged, and a digital read out indicates the distance represented by such averaging.
REFERENCES:
patent: 3530470 (1970-09-01), Sheftelman et al.
patent: 3690767 (1972-09-01), Missio et al.
patent: 3772693 (1973-11-01), Allard et al.
patent: 3810179 (1974-05-01), Merrick
Skolnik, Radar Handbook, 1970, p. 37-7.
Buczinski S.C.
Del Norte Technology, Inc.
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