Satellite Tracking Microwave Phased Array Antenna.
| dc.contributor.advisor | Ridwan, Murad (PhD) | |
| dc.contributor.author | Habte, Eyob | |
| dc.date.accessioned | 2018-06-26T05:58:26Z | |
| dc.date.accessioned | 2023-11-04T15:14:40Z | |
| dc.date.available | 2018-06-26T05:58:26Z | |
| dc.date.available | 2023-11-04T15:14:40Z | |
| dc.date.issued | 2016-08 | |
| dc.description.abstract | Satellite based communication and the utilization of wideband frequency spectrum are essential to military, aerospace communication and navigation. It will also enhance the terrestrial communication to meet the required coverage, quality and data rate. So its implementation is inevitable in the near/future Ethiopian communication engineering advancement. Satellite tracking is one of the important issue in fulfilling the complete satellite based communication. The challenges in tracking methods such as, the need to rotate large dish antenna with the aid of Programmable Logic Controller, its applicability to only single target and drawbacks related with pointing accuracy are some of them. This thesis investigates both adaptive phased array antenna within microwave frequency spectrum and satellite constellation theories to verify the ability of phased array antenna in tracking multiple targets by using single Tracking, Telemetry Commanding and Monitoring station at the sub-satellite point. The thesis also presents adaptive signal processing algorithms to demonstrate their tracking capability of two satellites' directional beacons. In this thesis, Matlab software has been used to simulate adaptive signal processing. The analysis of the satellites’ constellation using the six orbital element sets and the directional beacon signal from two satellites in the Line of Sight direction is performed. The where about of the satellites are extracted from the beacon signal angle of arrival. It is then used by the steering vector to point the maxima towards the targets and the nulls towards the interferer. The error vector is generated by the difference between the reference signal and the array output and used to derive the weight control block. The simulation is within Ka and C – band frequency spectrum, which is performed by implementing various numbers of elements and spacing. Based on the simulation result, we have concluded that the optimum elemental spacing in microwave frequency spectrum is 0.5 at a cost of 20 times more elements than that was simulated for 10 elements. Generally, by controlling the inter element spacing and array number; it is possible to track multiple moving satellites. Keywords: Adaptive phased antenna, Steering vector, Error vector, Satellite Constellation and Six orbital element sets. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/3396 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Adaptive phased antenna | en_US |
| dc.subject | Adaptive phased antenna | en_US |
| dc.subject | Error vector | en_US |
| dc.subject | Six orbital element sets | en_US |
| dc.subject | Steering vector | en_US |
| dc.title | Satellite Tracking Microwave Phased Array Antenna. | en_US |
| dc.type | Thesis | en_US |