Incorporated in 1956 and located in Waterloo, Ontario, Raytheon Canada Limited is an ISO 9001/TickIT-registered company that is a world leader in solid-state air traffic control (ATC) primary surveillance radars and high frequency surface wave radar (HFSWR) technology.
Raytheon Canada has been a major supplier of air traffic control equipment for 40 years and continuous research and development has kept it at the forefront of radar technology. Raytheon's solid-state ATC primary surveillance radar (PSR) system is a field-proven, mature system built to inventory, installed and operating in numerous countries around the world. The company has sold more solid-state primary surveillance radars than all its competitors combined.
Raytheon's experience in international ATC radar systems is extensive, ranging from individual airport installations to country-wide, multiple-site turn-key systems.
In Canada, Raytheon Canada completed the radar modernisation project (RAMP), the world's largest network of solid-state primary radars, monopulse secondary radars and automation systems. Raytheon Canada radars also are used in the US, the Caribbean, south America, Europe, the Middle East, Asia and Australia.
Its wealth of experience and field-proven designs were important factors in the choice of Raytheon Canada radars for the digital airport surveillance radar (DASR) project award by the US Department of Defense (DoD) and the Federal Aviation Administration (FAA).
Raytheon Canada's all-solid-state primary surveillance radars also played an important role in Raytheon Company's DoD/FAA DASR contract award from the US Air Force. The DASR programme involves up to 213 solid-state digital radars and will extend through 2007. Valued at US$620 million, it is the world's largest ATC radar contract.
| Raytheon ASR-23SS, Oman |
Raytheon Canada's primary surveillance radars are available in S-band (ASR-10SS) or L-band (ASR-23SS), with eight or 16 transmitter modules. The all-solid-state design exploits a unique blend of the latest advances in RF transistor technology and COTS processors in a VME bus environment, with software that is mature, reliable and easily supported. The two radar models have many characteristics in common. The overall architecture and the processing subsystems are almost identical. This has significant logistics advantages with respect to training, maintenance and spares requirements.
The modular radar system is fault-tolerant and designed for unmanned automatic operation, using redundant subsystems that include built- in test equipment (BITE). It can be controlled and monitored from a remote display terminal. The system can be adapted to handle high, medium or low traffic volumes for approach or extended enroute coverage volumes. The system is easily expandable and results in improved air safety, reduced operating costs and low maintenance and repair costs. The air-cooled solid-state transmitter is a multi-module package providing continuous and single-channel frequency diversity.
Many coastal nations face the problem of how to exercise maritime sovereignty rights while protecting coastal economic zones from smuggling, drug trafficking, illegal fishing and dumping of hazardous materials.
To fill this emerging need, Raytheon Canada, in collaboration with NewEast Wireless Telecom Inc, Northern Radar Systems Limited and the Canadian government, has developed an integrated maritime surveillance (IMS) system. IMS is an economical, shore-based system designed to provide continuous, all-weather surveillance of the 200 nmi exclusive economic zone (EEZ).
IMS accomplishes this by using three key technologies in combination with existing conventional systems: long-range HF surface-wave radar (HFSWR); automatic dependent surveillance (ADS) systems; and multiple-sensor data fusion and displays.
Raytheon Canada's IMS uses land-based long-range surface wave radar that transmits high-frequency (HF) radio waves that follow the Earth's curvature. The SWR-503 surface wave radar detects and tracks aircraft, surface vessels and icebergs out to 500km from the shore in a sector of up to 120 degrees. The radar also provides current and surface wind data.
At an operations control centre, the IMS system correlates detections from surface wave radar sites with identification information from ADS systems and other sensors. All this data is fused to create a database and display system to provide a complete picture of surface and air activity in the EEZ.
By databasing vessel, aircraft and iceberg air/ water movements in the EEZ, Raytheon's IMS system introduces new methods of examining surveillance data. Vessel tracks can be run backward and forward in time, enhancing military patrols and coast guard search-and-rescue efforts as well as oil spill control, drug inter-diction and iceberg alerts.
Spectrum management is an important factor for surface wave radar. The IMS system continuously monitors the HF spectrum occupancy. A frequency management processor assembles a picture of the spectrum and assigns the best available clear frequency slot to each radar.
Raytheon Canada's advanced signal processing technology is an integral part of the IMS system. The MHP-2000 multiple hypothesis processor developed by Raytheon Canada combines detections and supporting surveillance data from radar, ADS and other sources to track and identify targets. This approach reduces the likelihood of lost, switched or missed tracks by facilitating various possible scenarios at each update and by not discarding those outcomes until they become highly unlikely.
| Raytheon systems can be adapted to handle high, medium or low traffic volumes |
Such processing provides an optimum solution to tracking problems and is efficiently implemented through the use of multi-dimensional data clustering and pruning. The tracks are filtered and smoothed using an adaptive Kalman filter that enables the processor to track extreme target manoeuvres.
The MHP-2000 also provides a data fusion function, incorporating data from different sensor types using the complete dynamic state of each track. Target position, speed, altitude and other characteristics such as size can be estimated. Secondary sensors can be used to identify certain targets and calibrate the surveillance zone. An expert system predicts manoeuvres for collision avoidance, lane routings and terrain avoidance. A geographic information system (GIS) provides direct access to environment and target characteristics.
The processor can fuse 2D and 3D radar detections, IR detections, RDF or sonar bearings, transponder reports, observer reports and other inputs. Sensor accuracies are incorporated in the fusion process. The HP-2000 is platform independent and uses object-orientated software. The processor is directly applicable to IR, sonar, EW, situation assessment and logistic tracking.
With state-of-the-art technology systems being sold around the world, Raytheon Canada has the experience and project management methodologies required to complete complex international high-technology projects on time and within budget.
