watkipet / splat Goto Github PK

When using Splat in dBm output mode, that is, where transmitter ERP is specified and dBm is the desired quantity, I notice that the terrain obstruction loss is not being used, the final predicted dBm is based on ITWOM 3 only as if it were a line-of-sight link, making 10's of dB error. I tested only the "Double Horizon Diffraction Dominant" of Splat! vs. Radio Mobile Deluxe.

This is true of Splat 1.4.0 as well as this development version.

Separately, glad you have overhauled the manual bash install, Cmake was sorely needed. Planning to make minor tweak to allow non-root install to ~/.local optional.

When running in non-hd mod (without the '-hd' command line option), the resulting coverage map is squashed. In addition, regions seem interpolated with mirror images on top of one another.

I found this version following the forks from jmcmellan's original - which is broken so badly I don't even know where to start. However - this one appears broken as well. It won't ever plot more than one SDF tile, and it also (like the original) doesn't plot the transmitter/cities over the terrain background.

Using the -maxpages 64 argument it still only loads a single SDF tile.

This is the call I use to create a topo map (which works out to a few hundred km using jmcmellan's original code, but not this one):

splat -t MySite -R 200.0 -s cities.dat -d ./SDF -maxpages 64 -metric -o topo_map.ppm

This is on OS X high sierra with macports, cmake/build runs without errors. But installation doesn't. I'm running it locally.

There should be automated tests along with a continuous integration system. One methodology is to use the Travis CI. This work has been started with the selftest branch.

I have some coordinates which give me this error and I can't find why. Used both SRTM1 and SRTM3 datas and gave me the same error for both. Changing the coordinates a little, like 300m, seems to fix the problem but this is happening for a lot of points.
Here are the coordinates:
Tx
-25.539973517
49.197435959
3m

Rx
-25.534975575
49.200645038
3m