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Code Issues Releases Wiki Activity

Correct comments. Fixes: #269

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This commit is contained in:
Carles Fernandez 2019-05-01 14:44:12 +02:00
parent f65051ec31
commit cd0e7adaf4
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GPG Key ID: 4C583C52B0C3877D
1 changed files with 4 additions and 6 deletions
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10
src/algorithms/tracking/libs/tracking_2nd_PLL_filter.cc
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@ -49,7 +49,7 @@ void Tracking_2nd_PLL_filter::calculate_lopp_coef(float* tau1, float* tau2, floa
void Tracking_2nd_PLL_filter::set_PLL_BW(float pll_bw_hz)
{
//Calculate filter coefficient values
// Calculate filter coefficient values
d_pllnoisebandwidth = pll_bw_hz;
calculate_lopp_coef(&d_tau1_carr, &d_tau2_carr, d_pllnoisebandwidth, d_plldampingratio, 0.25); // Calculate filter coefficient values
}
@ -64,14 +64,13 @@ void Tracking_2nd_PLL_filter::initialize()
/*
* PLL second order FIR filter
* PLL second order IIR filter
* Req Input in [Hz/Ti]
* The output is in [Hz/s].
*/
float Tracking_2nd_PLL_filter::get_carrier_nco(float PLL_discriminator)
{
float carr_nco = d_old_carr_nco + (d_tau2_carr / d_tau1_carr) * (PLL_discriminator - d_old_carr_error) + (PLL_discriminator + d_old_carr_error) * (d_pdi_carr / (2.0 * d_tau1_carr));
//carr_nco = d_old_carr_nco + (d_tau2_carr/d_tau1_carr)*(PLL_discriminator - d_old_carr_error) + PLL_discriminator * (d_pdi_carr/d_tau1_carr);
d_old_carr_nco = carr_nco;
d_old_carr_error = PLL_discriminator;
return carr_nco;
@ -80,16 +79,15 @@ float Tracking_2nd_PLL_filter::get_carrier_nco(float PLL_discriminator)
Tracking_2nd_PLL_filter::Tracking_2nd_PLL_filter(float pdi_carr)
{
//--- PLL variables --------------------------------------------------------
// PLL variables
d_pdi_carr = pdi_carr; // Summation interval for carrier
//d_plldampingratio = 0.65;
d_plldampingratio = 0.7;
}
Tracking_2nd_PLL_filter::Tracking_2nd_PLL_filter()
{
//--- PLL variables --------------------------------------------------------
// PLL variables
d_pdi_carr = 0.001; // Summation interval for carrier
d_plldampingratio = 0.7;
}