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Great Malvern, United Kingdom

Ward K.D.,Igence Ltd | Watts S.,Thales Alenia
IET Radar, Sonar and Navigation | Year: 2010

Radar backscatter from the sea surface has a significant effect on radar systems operating in a maritime environment. This study considers the application of modelling sea clutter to the design and development of such systems, and addresses the sensitivity of the predicted performance to the choice of model. The typical phases of the life-cycle of a radar system are described, along with how models are used to support the radar development. Different types of model are reviewed and some examples are given of the comparison of their effect on predicted performance. The conclusion is that the differences are important and continue to warrant further investigation. © 2010 The Institution of Engineering and Technology. Source


Inggs M.,University of Cape Town | Balleri A.,University College London | Al-Ashwal W.A.,University College London | Ward K.D.,Igence Ltd | And 9 more authors.
International Geoscience and Remote Sensing Symposium (IGARSS) | Year: 2012

This paper describes a multistatic, sea clutter and vessel database, assembled using the three node, S Band radar, known as NetRAD (for, 'Netted Radar'). This data was collected in the United Kingdom and South Africa during 2009-201. It is the intention of the investigators and sponsors of this work to make the raw data available to individuals and organisations interested in processing this multistatic data in support of the development of the understanding of sea clutter and vessel properties in the multistatic configuration. © 2012 IEEE. Source


Al-Ashwal W.A.,University College London | Baker C.J.,Australian National University | Balleri A.,University College London | Griffiths H.D.,University College London | And 7 more authors.
Electronics Letters | Year: 2011

Presented is a statistical analysis of vertically-polarised bistatic sea clutter data, with bistatic angles ranging from 30° to 90°, compared with simultaneously-gathered monostatic clutter data. It is found that there is no significant change in the bistatic reflectivity compared to the monostatic except close to bistatic angles of 90°. It is found that the shape parameter of the K-distribution fitted to the clutter is significantly higher for the bistatic clutter than for the equivalent monostatic clutter. © 2011 The Institution of Engineering and Technology. Source


Griffiths H.D.,University College London | Al-Ashwal,University College London | Ward K.D.,Igence Ltd | Tough R.J.A.,Igence Ltd | And 2 more authors.
IET Radar, Sonar and Navigation | Year: 2010

Bistatic radar is a subject of considerable present interest. Despite this, current understanding of the properties of bistatic clutter, and in particular, bistatic sea clutter, is limited at best. The purpose of this study is to present an analysis of the limited existing published radar data and to derive an empirical model, which expresses the variation of mean σ0 with the measurement geometry and sea conditions. This empirical model is then compared with electromagnetic (EM) scattering calculations using the composite model (sometimes called the two-scale model) to show the extent to which the EM model is able to reproduce the trends observed in the data. The results indicate where improvements to bistatic EM modelling are required (very low grazing angles and out-of-plane scattering), and a general need for more radar data to extend the empirical σ0 model and expand it to the bistatic clutter statistics. © 2010 The Institution of Engineering and Technology. Source


Trademark
Igence Ltd | Date: 2013-03-19

Computer software and firmware for collecting, processing, analyzing and reporting performance data in the field of business organization; Computer software and firmware for technical applications; computer software and firmware for military applications; computer software and firmware for preparing financial applications; electrical and electronic apparatus and instruments for all processing, logging, storing, transmitting, retrieving and receiving data; and parts and fittings for the aforesaid goods. Business development services; business advisory services relating to product development; business advisory services relating to e-commerce; purchasing and procurement services, namely, procuring of contracts for others for the purchase of manpower services. Scientific and technological services and research design thereto in the fields of technical, military, financial, surveillance, radar and reconnaissance applications; industrial analysis and research services in the custom design and development of computer hardware, firmware and software; designing and graphic designing of web pages for others; computer graphics design, namely, creation of interactive graphics for simulation and training systems; research and development and consultation related thereto in the fields of technical, financial, surveillance, radar and reconnaissance applications; research and development of new products for others; research; research and development of new products.

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