A Sequential Self-Synchronous, Beam Tagging Technique for Adaptive Control of Transmitting Arrays.
Abstract
A sequential, self-synchronous, beam tagging technique for the control of an adaptive transmitting array is presented and analyzed. The beam tagging operation, phase error measurements and phase corrections are performed sequentially in time for each signal transmitted from the array. This approach eliminates the need for more than one beam tagging modulation. The system is self-synchronous since the phase error detection receiver processes the down-link signal to obtain phase control information in the presence of the data modulation. An analysis is performed which relates the phase error measurement accuracy to the system parameters, namely: (1) the data transmission rate, (2) the number of array elements, (3) the signal-to-noise ratio and (4) the time devoted to estimating the phase error. A particular closed-loop model for the phase control operation is developed and shown to be equivalent to a sample data feedback control system. This closed-loop model is analyzed to determine the required phase measurement accuracy and the phase correction rate for successful adaptive transmitting array operation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1968
- Accession Number
- AD0846134
Entities
People
- James E. Tourdot
Organizations
- Ohio State University