In development - Extended range CIR dataset

A prototype Navtech CIR radar was modified to enable an instrumented range of 1Km. This new operation mode is available on request, and is accessed as a user-selectable profile in the Vertex web interface.

The 1Km mode is realised by modifying the 77GHz FMCW output, the range bin is increased from 17.5cm to 29.2cm, yielding an overall radar range increase from 600m to 1Km using 3424 bins.

Example Dataset 1:

The prototype radar mode was used to survey numerous small sailboats and RIBS travelling around a reservoir. The .colraw file below is a radar dataset containing the movements of these boats, and includes a pedestrian carrying a large 1200m² corner cube reflector detected moving along the southern perimeter wall at a range of 1Km.

Further details of the test setup are as follows:

Open

CIR in 1Km mode tracking movement of small vessels on a reservoir and a target moving along the perimeter wall.

Open

Example of sailboats moving around the radar field of view

Download the .colraw file below and use the Colossus net playback tool to playback the data through a Radar Viewer such as Radar-View Lite.

Open

Example Dataset 2:

Displays the 1Km range when entering a harbour in Plymouth, UK. Mounted onboard a 12m vessel in a smooth sea state. The radar was mounted on the ships mast at height 3-4m from the water level.

This dataset is in the Cambridge Pixel .cpr file format, containing:

• Raw radar data from Navtech’s CIR-Gen2

• GPS heading correction (NMEA inputs: $GPGGA, $GPRMC, $GPHDT, $GPROT, $GPZDA)

The .cpr file can be played back in a radar viewer such as Radar-View Lite, or SPX Server which supports GPS data streams.

See https://navtechradar.atlassian.net/wiki/spaces/IA/pages/2318893437 for the SPX Radar-View Lite download, and information on how to display radar data. Once downloaded, Select 'Channel-A' to bring up the source control panel, and navigate to the example data .cpr file.

Open