AVTIS 1 was the original instrument that began development in 2004. It is a combination of an active radar imager, and a passive radiometer operating at millimetre wavelengths (1 – 10 mm). The active radar allows for topographic maps to be generated of a scene of interest, and the radiometer allows for a thermal image of the scene to be generated. Each image is built up in a raster scan and both thermal and topographic images can be overlayed to give detailed information of any particular scene. Operating in the millimetre wave region of the spectrum allows for compact equipment and high spatial resolution compared to microwave systems. It also ensure the capability of generating images under low visibility weather conditions as is often found around the dome structure of active volcanoes.

More information about AVTIS 1 can be found using the links below.


Instrumentation: Basic layout, construction and field setup.

Field Work: Local: Close range mapping in St Andrews and a survey of the local quarry at Balmullo.

Field Work: Montserrat 2004: First use of the instrument, development and limitations.

Field Work: Arenal 2005: Measuring the movement flows in Costa rica.

Field Work: Montserrat 2005: Capturing the growth and temperature of the Soufriere Hills lava dome.