GnssStatus

See also:

• LocationManager.registerGnssStatusCallback(GnssStatus.Callback)
• GnssStatus.Callback

CONSTELLATION_BEIDOU

public static final int CONSTELLATION_BEIDOU

Constellation type constant for Beidou.

Constant Value: 5 (0x00000005)

CONSTELLATION_GALILEO

public static final int CONSTELLATION_GALILEO

Constellation type constant for Galileo.

Constant Value: 6 (0x00000006)

CONSTELLATION_GLONASS

public static final int CONSTELLATION_GLONASS

Constellation type constant for Glonass.

Constant Value: 3 (0x00000003)

CONSTELLATION_GPS

public static final int CONSTELLATION_GPS

Constellation type constant for GPS.

Constant Value: 1 (0x00000001)

CONSTELLATION_IRNSS

public static final int CONSTELLATION_IRNSS

Constellation type constant for IRNSS.

Constant Value: 7 (0x00000007)

CONSTELLATION_QZSS

public static final int CONSTELLATION_QZSS

Constellation type constant for QZSS.

Constant Value: 4 (0x00000004)

CONSTELLATION_SBAS

public static final int CONSTELLATION_SBAS

Constellation type constant for SBAS.

Constant Value: 2 (0x00000002)

CONSTELLATION_UNKNOWN

public static final int CONSTELLATION_UNKNOWN

Unknown constellation type.

Constant Value: 0 (0x00000000)

equals

public boolean equals (Object o)

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

• It is reflexive: for any non-null reference value x, x.equals(x) should return true.
• It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
• It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
• It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
• For any non-null reference value x, x.equals(null) should return false.

The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

getAzimuthDegrees

public float getAzimuthDegrees (int satelliteIndex)

Retrieves the azimuth the satellite at the specified index.

getBasebandCn0DbHz

public float getBasebandCn0DbHz (int satelliteIndex)

Retrieves the baseband carrier-to-noise density of the satellite at the specified index in dB-Hz.

getCarrierFrequencyHz

public float getCarrierFrequencyHz (int satelliteIndex)

Gets the carrier frequency of the signal tracked.

For example it can be the GPS central frequency for L1 = 1575.45 MHz, or L2 = 1227.60 MHz, L5 = 1176.45 MHz, varying GLO channels, etc. If the field is not set, it is the primary common use central frequency, e.g. L1 = 1575.45 MHz for GPS. For an L1, L5 receiver tracking a satellite on L1 and L5 at the same time, two measurements will be reported for this same satellite, in one all the values related to L1 will be filled, and in the other all of the values related to L5 will be filled.

The value is only available if hasCarrierFrequencyHz(int) is true.

getCn0DbHz

public float getCn0DbHz (int satelliteIndex)

Retrieves the carrier-to-noise density at the antenna of the satellite at the specified index in dB-Hz.

getConstellationType

public int getConstellationType (int satelliteIndex)

Retrieves the constellation type of the satellite at the specified index.

getElevationDegrees

public float getElevationDegrees (int satelliteIndex)

Retrieves the elevation of the satellite at the specified index.

getSatelliteCount

public int getSatelliteCount ()

Gets the total number of satellites in satellite list.

getSvid

public int getSvid (int satelliteIndex)

Gets the identification number for the satellite at the specific index.

This svid is pseudo-random number for most constellations. It is FCN & OSN number for Glonass.

The distinction is made by looking at constellation field getConstellationType(int) Expected values are in the range of:

• GPS: 1-32
• SBAS: 120-151, 183-192
• GLONASS: One of: OSN, or FCN+100
  • 1-24 as the orbital slot number (OSN) (preferred, if known)
  • 93-106 as the frequency channel number (FCN) (-7 to +6) plus 100. i.e. encode FCN of -7 as 93, 0 as 100, and +6 as 106
• QZSS: 193-200
• Galileo: 1-36
• Beidou: 1-37
• IRNSS: 1-14

hasAlmanacData

public boolean hasAlmanacData (int satelliteIndex)

Reports whether the satellite at the specified index has almanac data.

hasBasebandCn0DbHz

public boolean hasBasebandCn0DbHz (int satelliteIndex)

Reports whether a valid getBasebandCn0DbHz(int) is available.

hasCarrierFrequencyHz

public boolean hasCarrierFrequencyHz (int satelliteIndex)

Reports whether a valid getCarrierFrequencyHz(int) is available.

hasEphemerisData

public boolean hasEphemerisData (int satelliteIndex)

Reports whether the satellite at the specified index has ephemeris data.

hashCode

public int hashCode ()

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

The general contract of hashCode is:

• Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
• If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
• It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)

usedInFix

public boolean usedInFix (int satelliteIndex)

Reports whether the satellite at the specified index was used in the calculation of the most recent position fix.