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Bug correction for acquisition and tracking: acquisition Doppler sign were inverted and this issue caused several wrong interpretations in tracking algorithms, resulting in a swap in I/Q components. Now the bug was corrected in all tracking algorithms.

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git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@249 64b25241-fba3-4117-9849-534c7e92360d
This commit is contained in:
Javier Arribas
2012-10-18 10:24:41 +00:00
parent 4859faa245
commit a25e712be6
13 changed files with 94 additions and 80 deletions
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10
src/algorithms/tracking/libs/tracking_discriminators.cc
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@@ -49,8 +49,8 @@
float fll_four_quadrant_atan(gr_complex prompt_s1, gr_complex prompt_s2,float t1, float t2)
{
float cross,dot;
dot = prompt_s1.imag()*prompt_s2.imag() + prompt_s1.real()*prompt_s2.real();
cross = prompt_s1.imag()*prompt_s2.real() - prompt_s2.imag()*prompt_s1.real();
dot = prompt_s1.real()*prompt_s2.real() + prompt_s1.imag()*prompt_s2.imag();
cross = prompt_s1.real()*prompt_s2.imag() - prompt_s2.real()*prompt_s1.imag();
return atan2(cross, dot) / (t2-t1);
}
@@ -64,7 +64,7 @@ float fll_four_quadrant_atan(gr_complex prompt_s1, gr_complex prompt_s2,float t1
*/
float pll_four_quadrant_atan(gr_complex prompt_s1)
{
return atan2(prompt_s1.real(), prompt_s1.imag());
return atan2(prompt_s1.imag(), prompt_s1.real());
}
@@ -77,9 +77,9 @@ float pll_four_quadrant_atan(gr_complex prompt_s1)
*/
float pll_cloop_two_quadrant_atan(gr_complex prompt_s1)
{
if (prompt_s1.imag() != 0.0)
if (prompt_s1.real() != 0.0)
{
return atan(prompt_s1.real() / prompt_s1.imag());
return atan(prompt_s1.imag() / prompt_s1.real());
}
else
{