Primary benefits: Our closed-loop method enables a transmit array to operate almost as flexibly as adaptive receive-only arrays have been for decades
Specialized Arrays Inc. 700 Wavecrest Ave. Unit 103 Indialantic, Fl 32903
This new technology overcomes the limitations of retrodirective and model-based methods by creating a closed loop with a non-passive (cooperative) source. It features auto-spatial synchronization of the antennas and auto phase/time synchronization of all electronics and fiber.
It enables a transmit array to operate almost as flexibly as adaptive receive-only arrays have been operating for decades without the limitations and/or complexity of open-loop methods. Thus, it enables such diverse applications as on-the-move military communications, arraying on a flexing structure such as shipboard, off-shore oil exploration platforms, where smaller antennas could be located on a space-available basis, arraying across very wide distances (1000’s km) where the sensors are not mutually visible, or with additional development arraying mobile high-gain antennas.
Examples: Three 12 meter antennas in CA, TX, and FL coherently transmitting to a GEOSAT
Current methods require:
Benefits of SAI very widely spaced transmit arraying system
(1) Does not require line-of-sight between the antennas
(2) Precision hardware and/or specialized hardware and algorithms to control circuit phase are not required since system is a long closed loop
(3) Low power requirements of individual dishes on transmit mitigates discovery
(4) Inherent redundancy: Handles element failures
(5) Receive: up to 3dB G/T increase each time the number of elements is doubled
(6) Transmit: up to 6dB EIRP increase each time the number of elements is doubled
(7 Patent-pending closed-loop method avoids the numerous limitations of retrodirective methods
(8) Flexible array configuration
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Definition: An array of very widely spaced ground reflectors used to coherently transmit to a 'Near Earth' target such as a typical COMSAT, (WGS, DSCS). A cooperative target is used that can feedback a measure of the transmit performance, and is a cooperative receiver, a bent-pipe, or a reflector.