TELEVISION-BASED

BISTATIC RADAR



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Radar and Remote Sensing Group
Department of Electrical Engineering
University of Cape Town


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Motivation

Much research and development in the field of Multistatic radar has been performed throughout the years. Alot of this work has either continued or evolved from projects and research performed from as early as before WWII.

In the military sector, the complexity of systems is growing rapidly to overcome new challenges associated with military operations on both inland and the sea. The requirements of radar systems, and other related applications in particular, are changing in relation to these new challenges.

Some of the challenges includes designing systems which are not easily detectable, and hence are immune to the enemy. Such systems involves a low energy radiation level from the receiver.

Bistatic systems are such systems, whereby the receiver and the transmitter are seperated by a comparable distance. Much of the energy radiated by a radar, is mainly contributed by the transmitter. With such a system, the transmitter is located elsewhere, and hence the receiver is susceptable from damage. If however, the transmitter in use had been destryoed, the receiver can be easily changed to adapted using signals transmitted from other avalible transmitters.

For this particular research, the use of terrestrial television signals will be used as the transmitting source.

Focus

This research project is focused on the designs and sinulations of the television-based bistatic radar system. The main focus surrounding this research is to gather the literature related to this topic for an assesement on how to persue the design and development for the system. Various systems have been designed and implemented by people throughout the world, and most of these systems have been looked into for the consideration of designing such a system.

Besides from the hardware designs and simulations, a simulator has also been created in IDL for the prediction of the SNR values for a certain distance away from both the receiver and transmitter. This simulator is specifically designed to indicate these SNR plots over South Africa.

Some real-time data has been captured via the use of a pc television card, and the analysis of this data for Doppler extractions is performed.

Methodology

A key aspect in the execution of this research is determining a suitable balance between the analysis of the acquired documentation and literature, as well as the hardware and software design process. Knowledge of the systems designed previously should be acquired first in order to design an efficient and stable system.

Team

This research project is being carried out by the following members shown in the Table below.

Name
Affiliation
Specialization
Ching-Wei, Wesley Chang
webpage
Department of Electrical Engineering,
University of Cape Town
RF & Microwave Systems Design
Kanono Ramashemole
webpage
Department of Electrical Engineering,
University of Cape Town
Tracking Algorithms for Multistatic Systems
Prof. Mike Inggs
webpage
Department of Electrical Engineering,
University of Cape Town
Radar systems
Sam Reiners
webpage
Department of Electrical Engineering,
University of Cape Town


Project Status

The analysis of the literature content has been complete, as well as the designs and simulation for the system. Various programs and applications have been produced for the analysis of the recorded data. Some of the images of the equipment use for measurement, as well as the images produced from the SNR simulator created can be seen below with two different transmitting sites.

In both the instances, the receiver is located and the University of Cape Town, while the transmitters are located and Tygerberg Hill, Cape Town, and Paarl, Cape Town respectively.














Contact Information

If you would like more information on this project, interested in participating in this project, or would like any information with regards to this field, please don't hesitate to contact any of the following members, or make use of the Radar & Remote Sensing website:
    
        Wesley Chang                          
        University of Cape Town
        Department of Electrical Engineering
        Menzies Building
        RM 617
        Private Bag
        Rondebosch 7701
        South Africa

        Phone no. (021) 650 3756
        E-mail to: wesley@rrsg.ee.uct.ac.za


        Prof. M.R. Inggs                       
        University of Cape Town
        Department of Electrical Engineering
        Menzies Building
        RM 609
        Private Bag
        Rondebosch 7701
        South Africa

        Phone no. (021) 650 2799
        E-mail to:
mikings@eng.uct.ac.za


Last Modified: 26 July 2005