Wirelessly networked opportunistic digital phased array system analysis and development of a 2.4 GHz demonstrator
Download
Author
Yeo, Eng Choon.
Date
2006-12Advisor
Jenn, David
Walters, Donald
Metadata
Show full item recordAbstract
The concept of a wirelessly networked opportunistic digital phased array radar brings about the added advantages of stealth, enhanced survivability, and maximum maneuverablity. The array elements are spread over a wide range of locations on the ship's hull and superstructure, and the Local Oscillator (LO) and data/control signals are wirelessly transmitted to and from a central computer processor, which also performs as the digital beamformer. As part of the ongoing research effort, this thesis focused on the hardware and software development of a 2.4 GHz two-element array demonstrator. A system analysis of a generic distributed array radar was done and some key parameters pertaining to the Transmit/Recieve (T/R) module and an eight-element array radar were calculated. In addition, the research analyzed the radar waveform properties, sampling and data rates, the digital beamformer concept and requirements, and assessed their impacts on the radar performoance. Two Transmit/Recieve (T/R) modules were built and a two-element array test bench developed using the various National Instruments Compact Reconfigurable Input and Output (cRIO) and Field Programmable Gate Array (FPGA) modules. The main software, written in LabVIEW, allowed the test bench to demonstrate proper functionalities of transmission and reception of the T/R modules. The hardware and software code could be extended easily for an eight-element array radar. Lastly, a number of measurements to characterize the T/R module were done. No significant interference between the modulator and demodulator boards inside of the compact T/R module chassis were observed.
Collections
Related items
Showing items related by title, author, creator and subject.
-
UAV digital tracking array design, development and testing
Pandya, Devieash James; Tan, I-Hsiang Leslie (Monterey, California: Naval Postgraduate School, 2009-12);This thesis carried out the design and development of an integrated array and receiver processor that utilizes advanced techniques of Robust Symmetric Numeric System (RSNS) and monopulse Digital Beamforming (DBF) to ... -
Implementing Closed-Loop Control Algorithms for DC-to-DC Converters and ARCP Inverters Using the Universal Controller
Hanson, Ronald J (Ft. Belvoir Defense Technical Information Center, 1997-06);The objective of this thesis is to investigate the use of the Universal Controller to control the DC-to-DC power converter and the Auxiliary Resonant Commutated Pole (ARCP) power inverter. These power electronic devices ... -
Variable resolution direction finding using the robust symmetrical number system
Lee, Anthony Kok Long (Monterey, California. Naval Postgraduate School, 2006-12);A digital implementation of a phase sampling interferometer antenna system based on the Robust Symmetrical Number System (RSNS) is built using commercial-off-the-shelf (COTS) items. The RSNS-based direction finding (DF) ...