channel_model.h File Reference

Header for radar channel propagation and interaction models. More...

#include <chrono>
#include <cstdint>
#include <exception>
#include <memory>
#include <span>
#include <unordered_map>
#include <vector>
#include "core/config.h"
#include "core/sim_id.h"
#include "core/simulation_state.h"
#include "math/geometry_ops.h"

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Classes
struct	simulation::CwPhaseNoiseBuffer
	Sampled phase-noise buffer for one timing source. More...
struct	simulation::CwPhaseNoiseLookup
	Lookup table for CW phase noise across timing sources. More...
struct	simulation::ReResults
	Stores the intermediate results of a radar equation calculation for a single time point. More...
class	simulation::RangeError
	Exception thrown when a range calculation fails, typically due to objects being too close. More...
struct	simulation::PreviewLink
	A calculated link segment for 3D visualization. More...

Namespaces
namespace	core
namespace	timing
namespace	radar
namespace	serial
namespace	fers_signal
namespace	simulation

Enumerations
enum class	simulation::StreamingTimingPhaseMode : std::uint8_t { simulation::ReceiverRelative , simulation::TransmitterOnly , simulation::None }
	Selects how timing phase noise is applied to streaming channel contributions. More...
enum class	simulation::LinkType : std::uint8_t { simulation::Monostatic , simulation::BistaticTxTgt , simulation::BistaticTgtRx , simulation::DirectTxRx }
	Categorizes the visual link for rendering. More...
enum class	simulation::LinkQuality : std::uint8_t { simulation::Strong , simulation::Weak }
	Describes the radiometric quality of the link. More...

Functions
void	simulation::solveRe (const radar::Transmitter *trans, const radar::Receiver *recv, const radar::Target *targ, const std::chrono::duration< RealType > &time, const fers_signal::RadarSignal *wave, ReResults &results)
	Solves the bistatic radar equation for a reflected path (Tx -> Tgt -> Rx).
void	simulation::solveReDirect (const radar::Transmitter *trans, const radar::Receiver *recv, const std::chrono::duration< RealType > &time, const fers_signal::RadarSignal *wave, ReResults &results)
	Solves the radar equation for a direct path (Tx -> Rx).
ComplexType	simulation::calculateDirectPathContribution (const radar::Transmitter *trans, const radar::Receiver *recv, RealType timeK, const CwPhaseNoiseLookup *phase_noise_lookup=nullptr)
	Calculates the complex envelope contribution for a direct propagation path (Tx -> Rx) at a specific time.
ComplexType	simulation::calculateStreamingDirectPathContribution (const core::ActiveStreamingSource &source, const radar::Receiver *recv, RealType timeK, const CwPhaseNoiseLookup *phase_noise_lookup=nullptr, core::FmcwChirpBoundaryTracker *chirp_tracker=nullptr, StreamingTimingPhaseMode timing_phase_mode=StreamingTimingPhaseMode::ReceiverRelative)
	Calculates a direct-path contribution from a cached streaming source.
bool	simulation::calculateStreamingReferencePhase (const core::ActiveStreamingSource &source, RealType timeK, core::FmcwChirpBoundaryTracker *chirp_tracker, RealType &phase_out)
	Evaluates a receive-time streaming waveform phase for receiver LO/dechirp references.
ComplexType	simulation::calculateReflectedPathContribution (const radar::Transmitter *trans, const radar::Receiver *recv, const radar::Target *targ, RealType timeK, const CwPhaseNoiseLookup *phase_noise_lookup=nullptr)
	Calculates the complex envelope contribution for a reflected path (Tx -> Tgt -> Rx) at a specific time.
ComplexType	simulation::calculateStreamingReflectedPathContribution (const core::ActiveStreamingSource &source, const radar::Receiver *recv, const radar::Target *targ, RealType timeK, const CwPhaseNoiseLookup *phase_noise_lookup=nullptr, core::FmcwChirpBoundaryTracker *chirp_tracker=nullptr, StreamingTimingPhaseMode timing_phase_mode=StreamingTimingPhaseMode::ReceiverRelative)
	Calculates a reflected-path contribution from a cached streaming source.
std::unique_ptr< serial::Response >	simulation::calculateResponse (const radar::Transmitter *trans, const radar::Receiver *recv, const fers_signal::RadarSignal *signal, RealType startTime, const radar::Target *targ=nullptr)
	Creates a Response object by simulating a signal's interaction over its duration.
std::vector< PreviewLink >	simulation::calculatePreviewLinks (const core::World &world, RealType time)
	Calculates all visual links for the current world state at a specific time.

Detailed Description

Header for radar channel propagation and interaction models.

This file contains the declarations for functions that model the radar channel, including direct and reflected signal path calculations, and power scaling according to the radar range equation. These functions form the core physics engine for determining the properties of a received signal based on the positions and velocities of transmitters, receivers, and targets.

Definition in file channel_model.h.