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Peak-Seeking Controller for Real-Time Mobile Satellite Tracking


Karol, Robert Frederick (2012) Peak-Seeking Controller for Real-Time Mobile Satellite Tracking. Senior thesis (Minor), California Institute of Technology. doi:10.7907/CCW3-V522.


Increasingly tightened restrictions on antenna beam-width force the use of higher performance hardware in gimbaled satellite communication transceivers. The need for more precise hardware is forcing the price of gimbal-mounted satellites antennas higher. In addition to the increased cost, as more satellites are launched every year, the demand for antenna systems which can receive data from the new satellites grows. Although algorithms capable of tracking a satellite with a mobile antenna have been developed and characterized in detail, instabilities in the system and cross-axis eects degrade the performance. Since an increase in tracking capability would be most benecial if it did not require extensive hardware changes, this project focuses on improvements to the conical scanning algorithm. An algorithm which is one of the oldest, and most common mobile satellite tracking system implementations. Initial work was done on developing and characterizing a new estimator which could be used while continuing to scan the antenna with as few software modications as possible. After successful development, work was done to eliminate the induced scanning motion and gain observability in the system using nothing but the noise inherent in the system.

Item Type:Thesis (Senior thesis (Minor))
Subject Keywords:satellite tracking, peak-seeking control, conical scanning, stabilized gimbal tracking, satcom on-the-move
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Mechanical Engineering
Minor Option:Aerospace Engineering
Control and Dynamical Systems
Awards:Library Friends Senior Thesis Prize Finalist, 2012. Mechancial Engineering Award, 2012.
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Murray, Richard M.
Group:GALCIT, Senior Undergraduate Thesis Prize
Thesis Committee:
  • None, None
Defense Date:June 2012
Non-Caltech Author Email:robbiekarol (AT)
Record Number:CaltechTHESIS:06082012-142445518
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7150
Deposited By: Robert Karol
Deposited On:22 Aug 2012 22:32
Last Modified:02 Aug 2022 21:48

Thesis Files

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