pcps_acquisition_fpga Class Reference

This class implements a Parallel Code Phase Search Acquisition that uses the FPGA. More...

#include <pcps_acquisition_fpga.h>

Public Member Functions
	~pcps_acquisition_fpga ()=default
	Destructor. More...
void	set_gnss_synchro (Gnss_Synchro *p_gnss_synchro)
	Set acquisition/tracking common Gnss_Synchro object pointer to exchange synchronization data between acquisition and tracking blocks. More...
uint32_t	mag () const
	Returns the maximum peak of grid search. More...
void	init ()
	Initializes acquisition algorithm. More...
void	set_local_code ()
	Sets local code for PCPS acquisition algorithm. More...
void	set_state (int32_t state)
	If set to 1, ensures that acquisition starts at the first available sample. More...
void	set_active (bool active)
	Starts acquisition algorithm, turning from standby mode to active mode. More...
void	set_channel (uint32_t channel)
	Set acquisition channel unique ID. More...
void	set_channel_fsm (std::weak_ptr< ChannelFsm > channel_fsm)
	Set channel fsm associated to this acquisition instance. More...
void	set_threshold (float threshold)
	Set statistics threshold of PCPS algorithm. More...
void	set_doppler_max (uint32_t doppler_max)
	Set maximum Doppler grid search. More...
void	set_doppler_step (uint32_t doppler_step)
	Set Doppler steps for the grid search. More...
void	set_doppler_center (int32_t doppler_center)
	Set Doppler center frequency for the grid search. It will refresh the Doppler grid. More...
void	reset_acquisition ()
	This function triggers a HW reset of the FPGA PL. More...
void	stop_acquisition ()
	stop the acquisition and the other FPGA modules. More...

Friends
pcps_acquisition_fpga_sptr	pcps_make_acquisition_fpga (Acq_Conf_Fpga &conf_)

Detailed Description

This class implements a Parallel Code Phase Search Acquisition that uses the FPGA.

Check An Open Source Galileo E1 Software Receiver, Algorithm 1, for a pseudocode description of this implementation.

Definition at line 58 of file pcps_acquisition_fpga.h.

Constructor & Destructor Documentation

~pcps_acquisition_fpga()

pcps_acquisition_fpga::~pcps_acquisition_fpga ( )

default

Destructor.

Member Function Documentation

init()

void pcps_acquisition_fpga::init

(

)

Initializes acquisition algorithm.

mag()

uint32_t pcps_acquisition_fpga::mag ( ) const

inline

Returns the maximum peak of grid search.

Definition at line 79 of file pcps_acquisition_fpga.h.

reset_acquisition()

void pcps_acquisition_fpga::reset_acquisition

(

)

This function triggers a HW reset of the FPGA PL.

set_active()

void pcps_acquisition_fpga::set_active

(

bool

active

)

Starts acquisition algorithm, turning from standby mode to active mode.

Parameters

active

- bool that activates/deactivates the block.

set_channel()

void pcps_acquisition_fpga::set_channel ( uint32_t  channel )

inline

Set acquisition channel unique ID.

Parameters

channel

- receiver channel.

Definition at line 112 of file pcps_acquisition_fpga.h.

set_channel_fsm()

void pcps_acquisition_fpga::set_channel_fsm ( std::weak_ptr< ChannelFsm >  channel_fsm )

inline

Set channel fsm associated to this acquisition instance.

Definition at line 120 of file pcps_acquisition_fpga.h.

set_doppler_center()

void pcps_acquisition_fpga::set_doppler_center ( int32_t  doppler_center )

inline

Set Doppler center frequency for the grid search. It will refresh the Doppler grid.

Parameters

doppler_center

- Frequency center of the search grid [Hz].

Definition at line 159 of file pcps_acquisition_fpga.h.

set_doppler_max()

void pcps_acquisition_fpga::set_doppler_max ( uint32_t  doppler_max )

inline

Set maximum Doppler grid search.

Parameters

doppler_max

- Maximum Doppler shift considered in the grid search [Hz].

Definition at line 139 of file pcps_acquisition_fpga.h.

set_doppler_step()

void pcps_acquisition_fpga::set_doppler_step ( uint32_t  doppler_step )

inline

Set Doppler steps for the grid search.

Parameters

doppler_step

- Frequency bin of the search grid [Hz].

Definition at line 149 of file pcps_acquisition_fpga.h.

set_gnss_synchro()

void pcps_acquisition_fpga::set_gnss_synchro ( Gnss_Synchro *  p_gnss_synchro )

inline

Set acquisition/tracking common Gnss_Synchro object pointer to exchange synchronization data between acquisition and tracking blocks.

Parameters

p_gnss_synchro

Satellite information shared by the processing blocks.

Definition at line 71 of file pcps_acquisition_fpga.h.

set_local_code()

void pcps_acquisition_fpga::set_local_code

(

)

Sets local code for PCPS acquisition algorithm.

set_state()

void pcps_acquisition_fpga::set_state

(

int32_t

state

)

If set to 1, ensures that acquisition starts at the first available sample.

Parameters

state

- int=1 forces start of acquisition

set_threshold()

void pcps_acquisition_fpga::set_threshold ( float  threshold )

inline

Set statistics threshold of PCPS algorithm.

Parameters

threshold

- Threshold for signal detection (check Navitec2012, Algorithm 1, for a definition of this threshold).

Definition at line 130 of file pcps_acquisition_fpga.h.

stop_acquisition()

void pcps_acquisition_fpga::stop_acquisition

(

)

stop the acquisition and the other FPGA modules.

---

The documentation for this class was generated from the following file:

• pcps_acquisition_fpga.h