satcat5::ptp::ControllerLR< MAX_WINDOW > Class Template Reference

Detailed Description

template<unsigned MAX_WINDOW>
class satcat5::ptp::ControllerLR< MAX_WINDOW >

Loop-filter for a linear-regression (LR) controller.

This filter uses linear regression to estimate phase and frequency offsets over a short window, then applies an IIR filter to track that piecewise-linear estimate with a controlled time-constant.

Definition at line 454 of file ptp_filters.h.

#include <ptp_filters.h>

Inheritance diagram for satcat5::ptp::ControllerLR< MAX_WINDOW >:

Collaboration diagram for satcat5::ptp::ControllerLR< MAX_WINDOW >:

Public Member Functions
	ControllerLR (const satcat5::ptp::CoeffLR &coeff)
	Constructor sets loop bandwidth, which can be changed later.
void	set_window (unsigned window)
	Adjust window-size. More...
void	reset () override
	Remaining API from ptp::Filter.
s64	update (s64 next, u32 elapsed_usec) override
	Implement the required API from ptp::Filter.
void	set_coeff (const satcat5::ptp::CoeffLR &coeff)
	Adjust loop bandwidth.
void	rate (s64 delta, u32 elapsed_usec) override
	Partial API from ptp::Filter.

Protected Member Functions
s64	update_inner (const u32 *dt, const s64 *y)

Protected Attributes
unsigned	m_count
u32	m_elapsed
satcat5::ptp::SlidingWindow< u32, MAX_WINDOW >	m_dly
satcat5::ptp::SlidingWindow< s64, MAX_WINDOW >	m_dat
satcat5::ptp::CoeffLR	m_coeff
satcat5::util::int128_t	m_accum
unsigned	m_window

Private Attributes
satcat5::ptp::Filter *	m_next

Member Function Documentation

set_window()

template<unsigned MAX_WINDOW>

void satcat5::ptp::ControllerLR< MAX_WINDOW >::set_window ( unsigned  window )

inline

Adjust window-size.

Also note "set_coeff(...)" inherited from parent.

Definition at line 464 of file ptp_filters.h.

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

• ptp_filters.h