Package org.orekit.estimation.measurements

The measurements package defines everything that is related to orbit determination measurements. All measurements must implement the ObservedMeasurement interface, which is the public API that the engine will use to deal with all measurements. The estimated theoretical values can be modified by registering one or several EstimationModifier objects. These objects will manage notions like tropospheric delays, biases, stations offsets ...

Since:

8.0

Author:

Luc Maisonobe, Thierry Ceolin

Interface Summary

Interface	Description
ComparableMeasurement	Base interface for comparing measurements regardless of their type.
EstimationModifier<T extends ObservedMeasurement<T>>	Interface for estimated measurements modifiers used for orbit determination.
EstimationsProvider	Interface for retrieving estimated measurements during orbit determination.
MeasurementParticipant	Interface underlying both observed and observing measurement objects.
ObservedMeasurement<T extends ObservedMeasurement<T>>	Interface for measurements used for orbit determination.
Observer	Abstract interface that contains those methods necessary for both space and ground-based satellite observers.

Class Summary

Class	Description
AbstractMeasurement<T extends ObservedMeasurement<T>>	Abstract class handling measurements boilerplate.
AbstractParticipant	Abstract class underlying both observed and observing measurement objects.
AbstractRangeRelatedMeasurement<T extends AbstractRangeRelatedMeasurement<T>>	Abstract class modeling one-way or two-way range-related measurement.
AngularAzEl	Class modeling an Azimuth-Elevation measurement from a ground station.
AngularMeasurement<T extends SignalBasedMeasurement<T>>	Abstract class for ground-based angular measurements, when the sensor receives the signal.
AngularRaDec	Class modeling a Right Ascension - Declination measurement from an optical sensor, typically via astrometry.
BistaticRange	Class modeling a bistatic range measurement using an emitter ground station and a receiver ground station.
BistaticRangeRate	Class modeling a bistatic range rate measurement using an emitter ground station and a receiver ground station.
EstimatedEarthFrameProvider	Class modeling an Earth frame whose Earth Orientation Parameters can be estimated.
EstimatedMeasurement<T extends ObservedMeasurement<T>>	Class holding an estimated theoretical value associated to an observed measurement.
EstimatedMeasurementBase<T extends ObservedMeasurement<T>>	Class holding an estimated theoretical value associated to an observed measurement.
FDOA	Class modeling a Frequency Difference of Arrival measurement with a satellite as emitter and two ground stations as receivers.
GroundStation	Class modeling a ground station that can perform some measurements.
InterSatellitesRange	One-way or two-way range measurements between two satellites.
MeasurementQuality	Data container for measurement's expected quality (used in orbit determination).
MultiplexedMeasurement	Class multiplexing several measurements as one.
ObservableSatellite	Class modeling a satellite that can be observed.
ObserverSatellite	Class that accepts a PVCoordinatesProvider for a space- based measurement receiver.
Position	Class modeling a position only measurement.
PseudoMeasurement<T extends PseudoMeasurement<T>>	Abstract class modeling a position(-velocity) measurement, referred to as pseudo because it is not based on any signals.
PV	Class modeling a position-velocity measurement.
Range	Class modeling a range measurement received by an observer.
RangeRate	Class modeling one-way or two-way range rate measurement between two vehicles.
SignalBasedMeasurement<T extends ObservedMeasurement<T>>	Abstract class modeling a measurement based on signal transmission.
TDOA	Class modeling a Time Difference of Arrival measurement with a satellite as emitter and two observers as receivers.
TurnAroundRange	Class modeling a turn-around range measurement using a primary observer and a secondary observer.

Enum Summary

Enum	Description
EstimatedMeasurementBase.Status	Enumerate for the status of the measurement.