RadarWatch is a full-featured, flexible client display application for receipt and display of radar and associated data. RadarWatch offers a lightweight maritime security and coastal surveillance solution, providing capabilities such as electronic chart display and flexible alarm logic.

RadarWatch is a ready-made application capable of displaying radar video, tracks, AIS, ADS-B and camera video, within multiple windows and across multiple screens. RadarWatch takes all of its inputs from network sources and supports a number of standard data formats, making it ideal for use in distributed architectures.

RadarWatch Enlarge

Designed to support multiple screens, RadarWatch allows the operator to drag, resize and reposition multiple display windows at will. The layout and graphics settings for all RadarWatch windows may be saved and restored with ease. Featuring Cambridge Pixel's trusted scan conversion technology, RadarWatch provides smooth, reliable and accurate display of radar video, along with symbology, on top of tiled maps or S57 electronic charts.

Comprehensive alarm logic is built into RadarWatch, allowing alarms to be generated under user-defined conditions. Graphical support is provided for defining alarm areas, alarm gates (uni- or bi-directional) and reference points. RadarWatch also performs CPA/TCPA calculations between target pairs and between targets and reference points. Alarms may be visual and audible, and network messages may also be generated and sent out to external equipment.

Augmented Vision

RadarWatch seamlessly unites presentation of radar and transponder data with display of camera video and camera control, affording operators the best possible situational awareness and enabling features such as slew-to-cue.

RadarWatch takes this a multi-sensor presentation a step further by adding radar/AIS/ADS-B information directly into the camera video feed. This unique feature allows targets to be labelled within the camera video footage, easing the burden the operator.


If a vessel's IMO or MMSI number is available RadarWatch can perform a lookup of vessel image, either from an internet service based or local database, providing fast visual verification of a vessel's true identity. Camera snapshots may also be taken and stored to supplement the information held for a vessel.

Integrated Solutions

RadarWatch accepts open data formats, such as ASTERIX and NMEA-0183, for its inputs and may therefore be may be used as a ready-made slave display for these data types. However, it is also designed to work closely with other Cambridge Pixel applications, including: SPx Server, SPx Fusion Server, Camera Manager and RDR.

This modular approach makes it easy for systems integrators to design and build a complete solution, selecting the functional modules necessary to meet the requirements of the particualr project. For example, if target tracking from radar video is required, simply include SPx Server. If the data sources include radar tracks from multiple radars and/or AIS, use SPx Fusion Server to combine them. If the project requires recording and replay of the data source, add RDR.

Cambridge Pixel's coastal surveillance and maritime security components Coastal surveillance radar Cambridge Pixel's RadarWatch application can display videos from up to 16 cameras. AIS ADS-B HPx Radar Interface SPx Tracking Server SPx Fusion Server RadarWatch RDR AIS transponder data may be used for track fusion and also received and displayed by RadarWatch ASD-B transponder data may be used for track fusion and also received and displayed by RadarWatch Analogue radar interface, typically: video, trigger, ACP & ARP signals Network radar video data (e.g. ASTERIX CAT240) Digitised radar video data, over PCI/PCIe bus SPx Server can accept a wide range of network radar video data fomrats, including: ASTERIX CAT240, Terma Scanter, Raytheon NSX, Simrad and SAM Electronics. SPx Server can distribute the radar video in a number of different formats, regardless of which format it received Primary radar tracks, derived from incoming radar video Fused tracks, containing the best available data from each of the sensor inputs Camera video in the form of RTSP/RTP H.264 streams

Radars form an intergal part of most maritime surveillance projects, because of the coverage range and all-weather detection capabilities that they can offer. Cambridge Pixel's team has decades of experience interfacing to different types of radars.

For radars that provide an analogue signal output (video, trigger, azimuth) an HPx card can be used to provide the physical interfacing to the radar.


Once the HPx card has acquired the radar video data all downstream processing and display is performed purely in software.

The ready-made SPx Server application receives radar video (either via and HPX card or directly over IP) and processes it to extract target track information. Target track messages are then distributed onto the network, along with radar video data, for other applications to receive and process or display.

SPx Fusion Server provides multi-sensor track correlation, allowing track messages from multiple sources to be compared and single set of unified tracks to be output, containing the best available data from all sensors.

The role of SPx Fusion Server is to determine where multiple track reports from overlapping sensors correspond to the same physical target, presenting a single, consistent track ID in this case.

RadarWatch is designed to receive its data inputs from the network, allowing multiple instances RadarWatch all to access the same data, simultaneously. Individual instances of RadarWatch can share defined areas, alarms and track filters.

RadarWatch contains built-in control of SPx Server and RDR, allowing for a more integrated solution.

RadarWatch can support up to 16 cameras for display and control. The multiview window allows for simultaneous display of all incoming videos. Two dedicated video windows let the user select any of the videos for full framerate, full window display.

RDR is available as an optional extra to add a recording capability. RDR is capable of receiving and recording all of the data streams that RadarWatch can receive. It includes support for scheduled recording, continous recording (with disk management) and control by RadarWatch.

On replay, a suitably configured instance of RadarWatch can receive the replayed data and display it as if it were live.

RadarWatch IP Network

Key Features

Platform Windows (7,8,10)
Input Radar Video Sources SPx format
HPx hardware
Number of Radar Video Inputs 2
Camera Video Inputs Network RTSP
DirectShow Capture Device
Number of Camera Video Inputs 16
Track Report Input SPx format
AIS Input NMEA-0183 via serial or network
112-bit extended squitter
Navigation Input (floating platform support) NMEA-0183 via serial or network
Track Table Configurable and sortable
Recording Support (via RDR) Radar video, camera video, track data, AIS, ADS-B, screen recording
Number of Displays 2x radar PPI windows
2x camera video windows
1x video multiview window
Underlay Maps S-57 charts, tiled maps, world vector shoreline map, radar coverage
Alerts Area-based, gate crossing, proximity, speed, CPA/TCPA
Camera Control Slew-to-cue, manual control
Typical Applications Coastal surveillance
Port and harbour security
Simple vessel traffic monitoring
Search and rescue
view > RadarWatch
RadarWatch Brochure
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SPx Server Brochure
view > SPx Server
Data Sheet
SPx Server Datasheet
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Data Sheet
RDR Datasheet
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Data Sheet
SPx Fusion
view > Augmented vision: Fusing radars and cameras... Military Embedded Systems January 2018