gnss

package

v0.8.1 Latest Latest Go to latest Published: Jun 11, 2024 License: Apache-2.0 Imports: 2 Imported by: 0

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Repository

gitlab.com/earthscope/gnsstools

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Documentation ¶

Index ¶

Variables
func ECEF2LLH(x, y, z float64, degrees bool) (latitude, longitude, height float64)
func LLH2ECEF(latitude, longitude, height float64, degrees bool) (x, y, z float64)
func SatAzEl(recX, recY, recZ, satX, satY, satZ float64) (azi, ele float64)
func XYZ2NEU(refX, refY, refZ, x, y, z float64) (n, e, u float64)
type System
- func NewSystemFromChar(sysChar string) (system System, err error)
- func (sys System) Char() string
- func (sys System) Int() int

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	SPEED_OF_LIGHT = 299792458.0
	// earth semimajor axis (m)
	RE_GRS80 float64 = 6378137.0
	RE_WGS84 float64 = 6378137.0
	// earth flattening
	FE_GRS80 float64 = 1.0 / 298.257222101
	FE_WGS84 float64 = 1.0 / 298.257223563
)

Functions ¶

func ECEF2LLH ¶

func ECEF2LLH(x, y, z float64, degrees bool) (latitude, longitude, height float64)

ECEF2LLH - Transform Earth-Centered, Earth-Fixed (ECEF) coordinates to Latitude, Longitude, and Height (LLH)

func LLH2ECEF ¶

func LLH2ECEF(latitude, longitude, height float64, degrees bool) (x, y, z float64)

LLH2ECEF - Transform Latitude, Longitude, and Height (LLH) to Earth-Centered, Earth-Fixed (ECEF) coordinates

func SatAzEl ¶

func SatAzEl(recX, recY, recZ, satX, satY, satZ float64) (azi, ele float64)

SatAzEl - Calculate satellite azimuth and elevation in degrees

func XYZ2NEU ¶

func XYZ2NEU(refX, refY, refZ, x, y, z float64) (n, e, u float64)

XYZ2NEU - Calculate East, North, Up

Types ¶

type System ¶

type System int

System stores the GNSS constellation type

const (
	GPS System = iota
	GLONASS
	SBAS
	GALILEO
	BEIDOU
	QZSS
	IRNSS
)

Here we enumerate the current constellations

func NewSystemFromChar ¶

func NewSystemFromChar(sysChar string) (system System, err error)

func (System) Char ¶

func (sys System) Char() string

Char returns the letter representing the system as a string

func (System) Int ¶

func (sys System) Int() int

Int returns the integer represnting the system as an int

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
ephemeris
gnsstime
ionosphere
metadata
observation
position
precise
troposphere
velocity

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