Date: 18/09/2016 RASS-R Coverage Map Calculator Jeroen Janssens

sl. 2 Date: 18/09/2016 Outline  Part of RASS-R  Screening vs relief files  Data source  User interface  Parameters  Calculation  Examples

sl. 3 Date: 18/09/2016 CMC part of RASS-R  Programmed in Labview  Part of RASS-R toolbox

sl. 4 Date: 18/09/2016 Screening vs relief files  Screening (angle) files  *.hrscr files (High Resolution SCReening)  contains the ranges and elevation angles for terrain obstacles inside each azimuth resolution angle  Usage:  Relief (map)  *.rlf file  for display purposes  Only used in Radar Comparator (Mono/Dual)

sl. 5 Date: 18/09/2016 Data source  Digital Elevation Models  digital files  consisting of points of elevations  sampled systematically at equally spaced intervals  during satellite observations of the earth  Resolution: between 60deg N and 56deg S= resolution of 3 arcsec  90mx90m Other regions= resolution of 30 arcsec  1kmx1km  Some info from Wikipedia:  One powerful technique for generating digital elevation models is interferometric synthetic aperture radar; two passes of a radar satellite (such as RADARSAT-1) suffice to generate a digital elevation map tens of kilometers on a side with a resolution of around ten meters. One also obtains an image of the surface cover.  Quality of the data depends on: terrain roughness sampling density (elevation data collection method) grid resolution or pixel size interpolation algorithm vertical resolution terrain analysis algorithm  CMC uses the following files:  \CMC Source Data \World 3, resolution of \World 30: *.DEM files  Whole world dataset: 40GB  Files describing cell of 1deg x 1deg

sl. 6 Date: 18/09/2016 User Interface Parameters  Radar parameters:  Name of radar: name will be used for files example: radar.hrscr and radar.rlf  Lon/Lat position  Altitude: antenna altitude above MSL  Range  Relief map:  Cell size: cell resolution  min 0.1NM, max 10.0NM, default 0.2NM  Coverage map:  Angle: azimuth resolution  min 0.01deg, max 2.0deg, default 1deg

sl. 7 Date: 18/09/2016 User Interface Calculator  Press start button  Calculation time depending on  Range  Cell resolution (if relief map is required)  Azimuth resolution (if coverage map is required)

sl. 8 Date: 18/09/2016 Example 1  Screening file and corresponding relief file (Geneva, Switzerland) (print screen from file viewer in Labview) Color scale: meters Color scale: degrees

sl. 9 Date: 18/09/2016 Example 2: Radar Comparator  Relief file  Color scale (m):

sl. 10 Date: 18/09/2016 Example 3: Radar Comparator  Coverage  Scale (Flight Level):

sl. 11 Date: 18/09/2016 Example 4: Radar Comparator  Combined view of relief and coverage meters flightlevel

sl. 12 Date: 18/09/2016 Example 5: Radar Comparator  With targets in upper layer