Tutor: Dr. Georgia Bournaka, Fraunhofer FHR
Research Interests: Bistatic and Passive Bistatic Radar (PBR) systems, VHF radars, LO target design, noise radar
This workshop sets the scene for a fictional scenario that requires use of a radar for the surveillance of a site of strategic significance and value. The tasks that the radar must perform to ensure the survivability of the important site can be deduced by reading through the Mission Description; however, the precise radar operating requirements are formulated more concretely towards the end of the Mission Description. For reasons that will become apparent in the Mission Description, a Passive Bistatic Radar (PBR) using illuminators of opportunity is the air surveillance solution most favoured for the protection of the important site in this particular example.
This workshop provides a detailed description of the surveillance problem and states the reasons why a bistatic radar is considered for deployment. All the relevant theory necessary to complete this workshop is presented in the accompanying lecture slides.
The working group will be tasked with evaluating the potential performance of a bistatic radar to address the stated requirements. Tasks will include a theoretical analysis of the signals of opportunity and the advantages and disadvantages of each. The theoretical detection range will be calculated for the different transmitters for given probabilities of detection and false-alarm. Furthermore, as a result of heavy industry operating close to the radar site, the interference floor of the system increases, thereby decreasing the radar sensitivity. Detection ranges will have to be re-evaluated in this context.
The tasks in this workshop will exercise most to the practical considerations that must be undertaken with a passive radar design. The level of Direct Signal Interference (DSI) will have to be estimated as well as methods for its suppression. Transmit antenna beam-tilt may limit the detection of high-altitude targets and this too will have to be analysed.
The tasks in this workshop are tailored to be completed by those who have no particular prior knowledge of bistatic radar systems. However, by the end of the workshop the participants should have a solid comprehension of the principles and practice of bistatic radar.