CSIRO NovaSAR-1 National Mosaic

The NovaSAR-1 Australia National Mosaic is an amalgamation of 349 NovaSAR-1 S-band radar images acquired between 2020 and 2023 in tri-polarisation mode (HH, VV, HV) from descending-pass orbits.
For the false colour composite layers, HH is red, HV is green, and VV is blue. This means white and purple show built-up areas, green is vegetated areas, and black is water or flat surfaces such as runways etc. The difference in white or purple for built-up areas is due to the buildings' orientation to the flight path and/or line of sight. N.B: CSIRO does not recommend the NovaSAR-1 Australia National Mosaic for detailed quantitative analysis, but rather as a qualitative reconnaissance product for exploring relative variations of S-band radar backscatter across large spatial areas in Australia.