- Qt 6.10
- Qt Positioning
- C++ Classes
- QGeoSatelliteInfo
- Qt 6.10.3 Reference Documentation

# QGeoSatelliteInfo Class

The QGeoSatelliteInfo class contains basic information about a satellite. More...

Header: | `#include <QGeoSatelliteInfo>`
CMake: | `find_package(Qt6 REQUIRED COMPONENTS Positioning)` `target_link_libraries(mytarget PRIVATE Qt6::Positioning)`
qmake: | `QT += positioning`

- List of all members, including inherited members
- QGeoSatelliteInfo is part of Implicitly Shared Classes.

## Public Types

enum | Attribute { Elevation, Azimuth }
enum | SatelliteSystem { Undefined, GPS, GLONASS, GALILEO, BEIDOU, …, CustomType }

## Properties

- satelliteIdentifier : const int
- satelliteSystem : const SatelliteSystem
- signalStrength : const qreal

## Public Functions

| QGeoSatelliteInfo()
| QGeoSatelliteInfo(const QGeoSatelliteInfo &other)
`(since 6.2)` | QGeoSatelliteInfo(QGeoSatelliteInfo &&other)
| ~QGeoSatelliteInfo()
qreal | attribute(QGeoSatelliteInfo::Attribute attribute) const
bool | hasAttribute(QGeoSatelliteInfo::Attribute attribute) const
void | removeAttribute(QGeoSatelliteInfo::Attribute attribute)
int | satelliteIdentifier() const
QGeoSatelliteInfo::SatelliteSystem | satelliteSystem() const
void | setAttribute(QGeoSatelliteInfo::Attribute attribute, qreal value)
void | setSatelliteIdentifier(int satId)
void | setSatelliteSystem(QGeoSatelliteInfo::SatelliteSystem system)
void | setSignalStrength(int signalStrength)
int | signalStrength() const
`(since 6.2)` void | swap(QGeoSatelliteInfo &other)
`(since 6.2)` QGeoSatelliteInfo & | operator=(QGeoSatelliteInfo &&other)
QGeoSatelliteInfo & | operator=(const QGeoSatelliteInfo &other)

## Related Non-Members

bool | operator!=(const QGeoSatelliteInfo &lhs, const QGeoSatelliteInfo &rhs)
QDataStream & | operator<<(QDataStream &stream, const QGeoSatelliteInfo &info)
bool | operator==(const QGeoSatelliteInfo &lhs, const QGeoSatelliteInfo &rhs)
QDataStream & | operator>>(QDataStream &stream, QGeoSatelliteInfo &info)

## Detailed Description

See also QGeoSatelliteInfoSource.

## Member Type Documentation

### enum QGeoSatelliteInfo::Attribute

Defines the attributes for the satellite information.

Constant | Value | Description
--- | --- | ---
`QGeoSatelliteInfo::Elevation` | `0` | The elevation of the satellite, in degrees.
`QGeoSatelliteInfo::Azimuth` | `1` | The azimuth to true north, in degrees.

### enum QGeoSatelliteInfo::SatelliteSystem

Defines the GNSS system of the satellite.

Constant | Value | Description
--- | --- | ---
`QGeoSatelliteInfo::Undefined` | `0x00` | Not defined.
`QGeoSatelliteInfo::GPS` | `0x01` | Global Positioning System (USA).
`QGeoSatelliteInfo::GLONASS` | `0x02` | Global Positioning System (Russia).
`QGeoSatelliteInfo::GALILEO` | `0x03` | Global navigation satellite system (EU).
`QGeoSatelliteInfo::BEIDOU` | `0x04` | BeiDou navigation satellite system (China).
`QGeoSatelliteInfo::QZSS` | `0x05` | Quasi-Zenith Satellite System (Japan).
`QGeoSatelliteInfo::Multiple` | `0xFF` | This type normally indicates that the information is received from a device that supports multiple satellite systems, and the satellite system is not explicitly specified. Depending on the data source, you might use other information to determine the actual system type. One example of the usage of this type is an NMEA $GNGSA message, which contains the IDs of the satellites being used, but does not explicitly mention their system types.
`QGeoSatelliteInfo::CustomType` | `0x100` | The first type that can be used for user purposes. For example when reimplementing NMEA data parsing in QNmeaSatelliteInfoSource. User can add more types using `CustomType + 1`, `CustomType + 2` and so on.

## Property Documentation

### `[read-only]` satelliteIdentifier : const int

This property holds the satellite identifier number.

The satellite identifier number can be used to identify a satellite within the satellite system.

The actual value may vary, depending on the platform and the selected backend.

For example, if nmea plugin is used, the satellite identifier for GPS satellite system represents the PRN (Pseudo-random noise) number, and the satellite identifier for GLONASS satellite system represents the slot number.

For NMEA-based backends the satellite identifier can be used to determine the satellite system type if it is not available from other sources. You can refer to satellite IDs list to check the ID ranges for different satellite systems.

Note: Depending on the platform and the selected backend, the satellite identifier ranges for different satellite systems may intersect. To uniquely identify a satellite, a combination of satelliteIndetifier() and satelliteSystem() must be used.

Access functions:

int | satelliteIdentifier() const

### `[read-only]` satelliteSystem : const SatelliteSystem

This property holds the satellite system in use, such as GPS or GLONASS.

Access functions:

QGeoSatelliteInfo::SatelliteSystem | satelliteSystem() const

### `[read-only]` signalStrength : const qreal

This property holds the signal strength.

Access functions:

int | signalStrength() const

## Member Function Documentation

### QGeoSatelliteInfo::QGeoSatelliteInfo()

Creates a satellite information object.

### QGeoSatelliteInfo::QGeoSatelliteInfo(const QGeoSatelliteInfo &other)

Creates a satellite information object with the values of other.

### `[noexcept, since 6.2]` QGeoSatelliteInfo::QGeoSatelliteInfo(QGeoSatelliteInfo &&other)

Creates a satellite information object by moving from other.

Note that a moved-from QGeoSatelliteInfo can only be destroyed or assigned to. The effect of calling other functions than the destructor or one of the assignment operators is undefined.

This function was introduced in Qt 6.2.

### `[noexcept]` QGeoSatelliteInfo::~QGeoSatelliteInfo()

Destroys a satellite information object.

### `[invokable]` qreal QGeoSatelliteInfo::attribute(QGeoSatelliteInfo::Attribute attribute) const

Returns the value of the specified attribute as a qreal value.

Returns -1 if the value has not been set.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

See also hasAttribute() and setAttribute().

### `[invokable]` bool QGeoSatelliteInfo::hasAttribute(QGeoSatelliteInfo::Attribute attribute) const

Returns true if the specified attribute is present in this update.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

### void QGeoSatelliteInfo::removeAttribute(QGeoSatelliteInfo::Attribute attribute)

Removes the specified attribute and its value.

### int QGeoSatelliteInfo::satelliteIdentifier() const

Returns the satellite identifier number.

Note: Getter function for property satelliteIdentifier.

See also setSatelliteIdentifier() and satelliteSystem().

### QGeoSatelliteInfo::SatelliteSystem QGeoSatelliteInfo::satelliteSystem() const

Returns the Satellite System (GPS, GLONASS, ...)

Note: This value can be used together with satelliteIdentifier() to uniquely identify a satellite.

Note: Getter function for property satelliteSystem.

See also setSatelliteSystem() and satelliteIdentifier().

### void QGeoSatelliteInfo::setAttribute(QGeoSatelliteInfo::Attribute attribute, qreal value)

Sets the value for attribute to value.

See also attribute().

### void QGeoSatelliteInfo::setSatelliteIdentifier(int satId)

Sets the satellite identifier number to satId.

The satellite identifier number can be used to identify a satellite within the satellite system.

The actual value may vary, depending on the platform and the selected backend.

For example, if nmea plugin is used, the satellite identifier for GPS satellite system represents the PRN (Pseudo-random noise) number, and the satellite identifier for GLONASS satellite system represents the slot number.

See also satelliteIdentifier().

### void QGeoSatelliteInfo::setSatelliteSystem(QGeoSatelliteInfo::SatelliteSystem system)

Sets the Satellite System (GPS, GLONASS, ...) to system.

See also satelliteSystem().

### void QGeoSatelliteInfo::setSignalStrength(int signalStrength)

Sets the signal strength to signalStrength, in decibels.

See also signalStrength().

### int QGeoSatelliteInfo::signalStrength() const

Returns the signal strength, or -1 if the value has not been set.

Note: Getter function for property signalStrength.

See also setSignalStrength().

### `[noexcept, since 6.2]` void QGeoSatelliteInfo::swap(QGeoSatelliteInfo &other)

Swaps this satellite information with other. This operation is very fast and never fails.

This function was introduced in Qt 6.2.

### `[noexcept, since 6.2]` QGeoSatelliteInfo &QGeoSatelliteInfo::operator=(QGeoSatelliteInfo &&other)

Move-assigns the value from other to this object

Note that a moved-from QGeoSatelliteInfo can only be destroyed or assigned to. The effect of calling other functions than the destructor or one of the assignment operators is undefined.

This function was introduced in Qt 6.2.

### QGeoSatelliteInfo &QGeoSatelliteInfo::operator=(const QGeoSatelliteInfo &other)

Assigns the values from other to this object.

## Related Non-Members

### bool operator!=(const QGeoSatelliteInfo &lhs, const QGeoSatelliteInfo &rhs)

Returns `true` if any of the parameters of the lhs satellite are not the same as those of rhs. Otherwise returns `false`.

### QDataStream &operator<<(QDataStream &stream, const QGeoSatelliteInfo &info)

Writes the given info to the specified stream.

See also Serializing Qt Data Types.

### bool operator==(const QGeoSatelliteInfo &lhs, const QGeoSatelliteInfo &rhs)

Returns `true` if all the parameters of the lhs satellite are the same as those of rhs. Otherwise returns `false`.

### QDataStream &operator>>(QDataStream &stream, QGeoSatelliteInfo &info)

Reads satellite information from the specified stream into the given info.

See also Serializing Qt Data Types.