2 By John A. Magliacane <kd2bd@amsat.org> (29-Jan-2004):
4 * Extensively modified by J. D. McDonald in January 2004 to include
5 the Longley-Rice propagation model using C++ code from NTIA/ITS.
6 In addition to analyzing line-of-sight propagation paths, SPLAT!
7 now generates multi-color maps illustrating predicted signal
8 strength (path loss), path loss graphs, path loss reports,
9 and terrain height graphs. The default earth radius, as well
10 as the default line-of-sight and path loss analysis range used
11 by SPLAT! may also be modified using new command-line options.
13 * splat.c was renamed to splat.cpp to reflect changes necessary
14 to merge with Longley-Rice C++ code. A C++ compiler (gcc/g++)
15 is now required to compile SPLAT!.
17 * The documentation was updated to reflect the new features
20 ----------------------------------------------------------------------------
23 By John A. Magliacane <kd2bd@amsat.org> (10-Jun-2002):
25 * Coverage areas are now processed four times faster than before.
28 * Determination of antenna height above average terrain (HAAT) based
29 on FCC Part 73.313(d) (Prediction of coverage) has been added.
31 * Site analysis report generation has been added when coverage mode
32 is invoked. These reports include ground height above mean sea
33 level, antenna height above mean sea level, antenna height above
34 average terrain, and average terrain calculated at azimuths of 0,
35 45, 90, 135, 180, 225, 270, and 315 degrees.
37 * Added site location information in degree, minute, second format,
38 as well as antenna height above average terrain to the content of
41 * Elevations below sea-level are now safely handled.
43 * Greyscale of topographic maps generated by SPLAT! is now referenced
44 between the highest and lowest elevations in the survey, instead of
45 between the highest elevation and sea-level. This change in reference
46 permits regions below sea level to be discernible in the map, and
47 allows subtle terrain variations to be clearly evident over regions
48 having relatively flat terrain.
50 * The documentation was updated.
52 * Several other minor coding changes/bug fixes were made.
54 ----------------------------------------------------------------------------
57 By John A. Magliacane <kd2bd@amsat.org> (14-May-2002):
59 * SPLAT! now buffers data while reading bzip2 compressed SPLAT
60 Data Files (SDFs). A 100 MHz Pentium now loads compressed SDF
61 files 208% faster than before, and takes only 2 seconds longer
62 than an uncompressed file.
64 * Configuration, compilation, and installation scripts now invoke
65 bash instead of sh. The -ffast-math compiler option was removed.
67 ----------------------------------------------------------------------------
70 By John A. Magliacane <kd2bd@amsat.org> (22-Apr-2002):
72 * The maximum number of transmitter/repeater sites handled
73 per analysis has been increased from two to four.
75 * Improved the configuration, compilation, and installation scripts.
76 Now ./configure compiles and installs the program, man page, and
77 all associated utilities in one command.
79 * Some minor coding changes were made, including the addition of an
80 #include <stdlib.h> in each of the utilities to silence a compilation
81 warning issued by gcc version 3.x.x about the use of the exit() function.
83 * The README and documentation files were updated.
85 ----------------------------------------------------------------------------
88 by John A. Magliacane <kd2bd@amsat.org> (08-Apr-2002):
90 * First public release of SPLAT!