Contact Professor Richard Ormondroyd
I was an undergraduate (1971) and PhD student (1975) at Sheffield University in the Department of Electronic and Electrical Engineering. My PhD research was in the area of the electrical properties of amorphous chalcogenide glass.
Prior to joining Cranfield University, I worked in the Department of Electronic and Electrical Engineering, University of Bath for 23 years from 1975, first as a lecturer and ultimately as a Reader. My main research interests at Bath were concerned mostly with spread-spectrum technology of cellular radio, including their pioneering use in bandsharing systems to reduce congestion in cellular radio frequency bands and the development of novel spread-spectrum synchronisers. I also worked on novel semiconductor laser devices such as beam-steering and optical logic gates as well as active integrated optics components. I also carried out work on the use of Orthogonal Frequency. Division Multiplexing (OFDM) in highly dispersive environments, including the underwater acoustic environment.
My teaching interests lie in the areas of communications systems, tactical data links, electronic warfare, satellite communications and networks for a number of MSc courses and professional short courses offered by CDS.
I have a broad range of research interests focussed mainly in the areas of:
- broadband communication systems operating in heavily dispersed environments, such as underwater acoustic communications, future generation cellular radio systems
- electronic warfare and passive emitter geolocation methods
- passive radar and passive coherent location
- use of overlay bandsharing techniques for potential cognitive radio applications
- other interesting work includes the use of novel approaches to frequency estimation, mitigating multipath effects in doubly-spread channels (i.e. delay-spread and Doppler-spread channels) and interference cancellation techniques in sonar systems.
The most recent work I have been involved with has been in the area of modelling avionics data busses.
Articles In Journals
- Siyau MF, Ormondroyd RF & Nobles P (2005) Performance of a layered space-time cellular system used with a fractionally-spaced channel estimator operated in a time-varying frequency selective wireless channel, IEEE Vehicular Technology Magazine.
- Dhanoa JS, Hughes EJ & Ormondroyd RF Accurate doppler extraction from a single chirped radar pulse, IEEE Transactions on Aerospace and Electronic Systems.
- Nobles P, Siyau MF & Ormondroyd RF (2003) Estimation of frequency selective wireless channels for layered space-time systems. In: IEEE International Sympo on Antennas and Propagation and URSI meeting, Columbus, OH, 1 June 2003.
- Nobles P, Siyau MF & Ormondroyd RF (2003) Channel estimation for layers space-time systems in time-varying frequency selective wireless channels. In: IEEE Vehicular Technology Conf, Orlando, FL, 1 October 2003.
- Nobles P, Siyau MF & Ormondroyd RF (2003) Channel estimation for layered space-time systems. In: Signal Processing Advances in Wireless Communications, SPAWC, Italy, 1 June 2003.
- Dhanoa JS, Hughes EJ & Ormondroyd RF (2003) Simultaneous detection and parameter estimation of multiple linear chirps. In: International Conference on Acoustics, Speech, and Signal Processing (ICASSP '03), Hong Kong, 6-10 April 2003.
- Nobles P, Siyau MF & Ormondroyd RF (2002) Semi-blind channel estimation for a space-time system using a combined MEA-PI and auto-tracking algorithm. In: 2002 IEEE International Conf on Acoustics, Speech and Signal Processing - Orlando FL, 1 May 2002.
- Nobles P, Siyau MF & Ormondroyd RF (2001) Channel estimation for space-Time systems using a multi-element array recursive least squares (MEA-RLS) algorithm. In: 4th International Sympo on Wireless Personal Multimedia Communications, Denmark, 1 September 2001.
- Nobles P, Siyau MF & Ormondroyd RF (2001) Non-linear detection for space-time systems using orthogonal triangularization by QR decomposition. In: IEE Seminar on MIMO communications Systems from Concept to Implementation - London Digest 2001, 1 December 2001.