TheArchive/mayhem-firmware
1
0
Fork 0
mirror of https://github.com/portapack-mayhem/mayhem-firmware.git synced 2025-08-23 23:38:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Use new decimation filters in AIS processor.

Browse Source
This commit is contained in:
Jared Boone
2016-01-01 13:20:02 -08:00
parent 316d5d433b
commit ff05833b02
3 changed files with 32 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
firmware/common/ais_baseband.hpp
View File

@@ -36,25 +36,17 @@ namespace ais {
// cleaning up ISI.
// Translate+RRC filter
// sample=76.8k, deviation=2400, b=0.5, symbol=9600
// Length: 32 taps, 4 symbols, 1 cycle of sinusoid
constexpr std::array<std::complex<float>, 32> rrc_taps_76k8_4t_p { {
{ 5.3368736990e-03f, 0.0000000000e+00f }, { 4.6850211151e-03f, 9.3190864122e-04f },
{ 1.7970187432e-03f, 7.4434953528e-04f }, { -2.5478608559e-03f, -1.7024261963e-03f },
{ -6.6710920858e-03f, -6.6710920858e-03f }, { -8.6960320791e-03f, -1.3014531722e-02f },
{ -7.5474785839e-03f, -1.8221225159e-02f }, { -3.8115552023e-03f, -1.9161981995e-02f },
{ -8.1697309033e-19f, -1.3342183083e-02f }, { 3.6940784220e-05f, -1.8571386338e-04f },
{ -7.5474785839e-03f, 1.8221225159e-02f }, { -2.4954265902e-02f, 3.7346698152e-02f },
{ -5.1450054092e-02f, 5.1450054092e-02f }, { -8.3018814119e-02f, 5.5471398140e-02f },
{ -1.1321218147e-01f, 4.6894020990e-02f }, { -1.3498960022e-01f, 2.6851100952e-02f },
{ -1.4292666316e-01f, 1.7503468055e-17f }, { -1.3498960022e-01f, -2.6851100952e-02f },
{ -1.1321218147e-01f, -4.6894020990e-02f }, { -8.3018814119e-02f, -5.5471398140e-02f },
{ -5.1450054092e-02f, -5.1450054092e-02f }, { -2.4954265902e-02f, -3.7346698152e-02f },
{ -7.5474785839e-03f, -1.8221225159e-02f }, { 3.6940784220e-05f, 1.8571386338e-04f },
{ 2.4509192710e-18f, 1.3342183083e-02f }, { -3.8115552023e-03f, 1.9161981995e-02f },
{ -7.5474785839e-03f, 1.8221225159e-02f }, { -8.6960320791e-03f, 1.3014531722e-02f },
{ -6.6710920858e-03f, 6.6710920858e-03f }, { -2.5478608559e-03f, 1.7024261963e-03f },
{ 1.7970187432e-03f, -7.4434953528e-04f }, { 4.6850211151e-03f, -9.3190864122e-04f },
// sample=38.4k, deviation=2400, b=0.5, symbol=9600
// Length: 16 taps, 4 symbols, 1 cycles of sinusoid
constexpr std::array<std::complex<float>, 16> rrc_taps_38k4_4t_p { {
{ 1.0619794019e-02f, 0.0000000000e+00f }, { 3.5758705854e-03f, 1.4811740938e-03f },
{ -1.3274742629e-02f, -1.3274742629e-02f }, { -1.5018657262e-02f, -3.6258246051e-02f },
{ 0.0000000000e+00f, -2.6549484581e-02f }, { -1.5018657262e-02f, 3.6258246051e-02f },
{ -1.0237997393e-01f, 1.0237997393e-01f }, { -2.2527985355e-01f, 9.3313970669e-02f },
{ -2.8440842032e-01f, 0.0000000000e+00f }, { -2.2527985355e-01f, -9.3313970669e-02f },
{ -1.0237997393e-01f, -1.0237997393e-01f }, { -1.5018657262e-02f, -3.6258246051e-02f },
{ 0.0000000000e+00f, 2.6549484581e-02f }, { -1.5018657262e-02f, 3.6258246051e-02f },
{ -1.3274742629e-02f, 1.3274742629e-02f }, { 3.5758705854e-03f, -1.4811740938e-03f },
} };
} /* namespace ais */