Module geometry 

GNSS geometry primitives.

Structs

CrossingEvent

Crossing event reported for a sequence sample.

Dop

The dilution-of-precision scalars for a geometry.

DopAtEpoch

DOP result plus the exact satellites that contributed rows.

DopOptions

DOP planning options.

DopSeriesPoint

DOP result for one sampled epoch.

ErrorEllipse2

A confidence ellipse from an arbitrary 2x2 covariance block.

Fence

Geodesic polygon fence on WGS84.

GeofencePositionEstimate

Position estimate used by probabilistic crossing detection.

GeometryCofactor

Cofactor matrices from a single-clock GNSS design matrix.

HorizontalErrorEllipse

Horizontal confidence ellipse from an ENU position covariance.

ItrfPositionM

A position in the ITRF / IGS-realization Earth-Centered-Earth-Fixed frame, expressed in meters.

ItrfVelocityMS

A velocity in the ITRF / IGS-realization ECEF frame, in meters per second.

LineOfSight

A line-of-sight unit vector from the receiver toward a satellite, in ECEF.

ObservableState

Satellite state required by the observable predictor.

PositionCovariance

Position covariance from a GNSS design matrix.

ProbabilityHysteresis

Hysteresis confidence for probabilistic crossing detection.

ProbabilityOptions

Options for containment_probability_with_options.

TransmitTimeOptions

Options controlling transmit-time satellite-state evaluation.

TransmitTimeSatelliteState

Satellite state at its signal transmit time for one receive epoch.

VisibilityOptions

Visibility planning options for SP3-derived GNSS geometry.

VisibilityPass

One sampled visibility pass.

VisibilitySeriesPoint

Visible-satellite count for one sampled epoch.

VisibleSatellite

One visible satellite row.

Wgs84Geodetic

A geodetic (ellipsoidal) position on the WGS84 datum.

Enums

CrossingKind

Crossing event kind.

DopError

Why a geometry has no finite DOP.

DopWeighting

DOP weighting policy.

EnuConvention

Which local east-north-up frame the position cofactor is rotated into before the horizontal/vertical DOP split.

GeofenceError

Error returned by geofence construction and evaluation.

ObservablesError

Error returned by the observable predictor.

PositionUncertainty

Position uncertainty accepted by probabilistic geofencing.

ProbabilityMethod

Probability integration method.

Constants

GEOFENCE_BOUNDARY_TOLERANCE_M

Boundary tolerance used when classifying a point on an edge, in metres.

PLANAR_FAST_PATH_MAX_RADIUS_M

Maximum anchor-to-vertex, anchor-to-query, and edge length for the planar path.

Traits

ObservableEphemerisSource

An ephemeris product usable by predict.

Functions

containment

Boolean containment for one position and fence.

containment_probability

Containment probability from position uncertainty.

containment_probability_with_options

Containment probability with an explicit integration method.

crossing

Boolean crossing detection over a position sequence.

crossing_probability

Probabilistic crossing detection with probability hysteresis.

crossing_probability_with_options

Probabilistic crossing detection with explicit probability options.

distance_to_boundary

Signed boundary distance for one position and fence, in metres.

dop

Compute the DOP scalars from line-of-sight directions, diagonal weights, and the receiver geodetic position.

dop_at_epoch

Compute DOP at one epoch from either an explicit satellite set or a visibility scan.

dop_series

Sample DOP over an inclusive time window, skipping singular or underdetermined samples.

dop_with_convention

dop with an explicit EnuConvention for the horizontal/vertical split.

error_ellipse_2x2

Confidence ellipse from an arbitrary 2x2 covariance block.

error_ellipse_2x2_unit

One-sigma ellipse from an arbitrary 2x2 covariance block.

error_ellipse_from_geometry

Horizontal confidence ellipse directly from line-of-sight rows and weights.

geometry_cofactor

Compute the single-clock geometry cofactor matrix from line-of-sight rows.

geometry_cofactor_with_convention

geometry_cofactor with an explicit EnuConvention for the position_enu block.

horizontal_error_ellipse

Horizontal confidence ellipse from a local ENU covariance matrix.

line_of_sight_from_az_el_deg

Construct an ECEF line-of-sight unit vector from topocentric azimuth and elevation in degrees.

passes

Build sampled rise/set/peak visibility passes over an inclusive time window.

position_covariance_from_geometry_m2

Position covariance from a single-clock GNSS design matrix.

rotate_covariance_ecef_to_enu_m2

Rotate an ECEF position covariance into local ENU square metres.

sagnac_range_first_order_m

First-order RTKLIB-style scalar Sagnac range correction.

sagnac_range_first_order_m_with_rate

First-order RTKLIB-style scalar Sagnac range correction with explicit rotation rate and light speed.

sagnac_rotate_ecef_m

Closed-form Sagnac/Earth-rotation transport of a transmit-time ECEF satellite position into the receive-time ECEF frame.

sagnac_rotate_ecef_m_with_rate

Closed-form Sagnac/Earth-rotation transport with an explicit Earth rotation rate in radians per second.

transmit_time_satellite_state

Evaluate a satellite’s transmit-time ECEF state for one static receiver.

visibility_series

Count visible satellites over an inclusive sampled time window.

visible

List satellites visible from a static receiver at one epoch.

visible_at_elevation_mask

Returns whether an elevation is at or above an elevation mask.

Type Aliases

Error

Error type returned by DOP calculations.