MATH_CONSTANTS.h File Reference

Defines useful mathematical constants and their scaled versions. More...

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Variables
constexpr double	GNSS_OMEGA_EARTH_DOT = 7.2921151467e-5
	Default Earth rotation rate, [rad/s].
constexpr double	SPEED_OF_LIGHT_M_S = 299792458.0
	Speed of light in vacuum [m/s].
constexpr double	SPEED_OF_LIGHT_M_MS = 299792.4580
	Speed of light in vacuum [m/ms].
constexpr double	GPS_GM = 3.986005e14
	Universal gravitational constant times the mass of the Earth, [m^3/s^2] IS-GPS-200M, 20.3.3.3.3.1.
constexpr double	GPS_F = -4.442807633e-10
	Constant, [s/(m)^(1/2)], IS-GPS-200M, 20.3.3.3.3.1.
constexpr double	GALILEO_GM = 3.986004418e14
	Geocentric gravitational constant[m^3/s^2], OS SIS ICD v2.0, pag. 44.
constexpr double	GALILEO_F = -4.442807309e-10
	Constant, [s/(m)^(1/2)]. OS SIS ICD v2.0, pag. 47.
constexpr double	GLONASS_OMEGA_EARTH_DOT = 7.292115e-5
	Earth rotation rate, [rad/s] ICD L1, L2 GLONASS Edition 5.1 2008 pag. 55.
constexpr double	GLONASS_GM = 398600.44e9
	Universal gravitational constant times the mass of the Earth, [m^3/s^2].
constexpr double	BEIDOU_OMEGA_EARTH_DOT = 7.2921150e-5
	Earth rotation rate, [rad/s] as defined in BDS-SIS-ICD-B1I-3.0 2019-02, pag. 3.
constexpr double	BEIDOU_GM = 3.986004418e14
	Universal gravitational constant times the mass of the Earth, [m^3/s^2] as defined in CGCS2000.
constexpr double	BEIDOU_F = -4.442807309e-10
	Constant, [s/(m)^(1/2)] F=-2(GM)^.5/C^2.
constexpr double	GNSS_PI = 3.1415926535898
	pi constant as defined for GNSS
constexpr double	HALF_PI = GNSS_PI / 2.0
	pi/2
constexpr double	TWO_PI = 2.0 * GNSS_PI
	2 * pi
constexpr double	TWO_P3 = 8.0
	2^3
constexpr double	TWO_P4 = 16.0
	2^4
constexpr double	TWO_P8 = 256.0
	2^8
constexpr double	TWO_P11 = 2048.0
	2^11
constexpr double	TWO_P12 = 4096.0
	2^12
constexpr double	TWO_P14 = 16384.0
	2^14
constexpr double	TWO_P16 = 65536.0
	2^16
constexpr double	TWO_P19 = 524288.0
	2^19
constexpr double	TWO_P31 = 2147483648.0
	2^31
constexpr double	TWO_P32 = 4294967296.0
	2^32
constexpr double	TWO_P56 = 7.205759403792794e+016
	2^56
constexpr double	TWO_P57 = 1.441151880758559e+017
	2^57
constexpr double	TWO_N2 = 0.25
	2^-2
constexpr double	TWO_N5 = 0.03125
	2^-5
constexpr double	TWO_N6 = 0.015625
	2^-6
constexpr double	TWO_N8 = 0.00390625
	2^-8
constexpr double	TWO_N9 = 0.001953125
	2^-9
constexpr double	TWO_N10 = 0.0009765625
	2^-10
constexpr double	TWO_N11 = 4.882812500000000e-004
	2^-11
constexpr double	TWO_N14 = 0.00006103515625
	2^-14
constexpr double	TWO_N15 = 3.051757812500000e-005
	2^-15
constexpr double	TWO_N16 = 1.525878906250000e-005
	2^-16
constexpr double	TWO_N17 = 7.629394531250000e-006
	2^-17
constexpr double	TWO_N18 = 3.814697265625000e-006
	2^-18
constexpr double	TWO_N19 = 1.907348632812500e-006
	2^-19
constexpr double	TWO_N20 = 9.536743164062500e-007
	2^-20
constexpr double	TWO_N21 = 4.768371582031250e-007
	2^-21
constexpr double	TWO_N22 = 2.384185791015625e-007
	2^-22
constexpr double	TWO_N23 = 1.192092895507810e-007
	2^-23
constexpr double	TWO_N24 = 5.960464477539063e-008
	2^-24
constexpr double	TWO_N25 = 2.980232238769531e-008
	2^-25
constexpr double	TWO_N26 = 1.490116119384765e-009
	2^-26
constexpr double	TWO_N27 = 7.450580596923828e-009
	2^-27
constexpr double	TWO_N29 = 1.862645149230957e-009
	2^-29
constexpr double	TWO_N30 = 9.313225746154785e-010
	2^-30
constexpr double	TWO_N31 = 4.656612873077393e-010
	2^-31
constexpr double	TWO_N32 = 2.328306436538696e-010
	2^-32
constexpr double	TWO_N33 = 1.164153218269348e-010
	2^-33
constexpr double	TWO_N34 = 5.82076609134674e-011
	2^-34
constexpr double	TWO_N35 = 2.91038304567337e-011
	2^-35
constexpr double	TWO_N38 = 3.637978807091713e-012
	2^-38
constexpr double	TWO_N39 = 1.818989403545856e-012
	2^-39
constexpr double	TWO_N40 = 9.094947017729280e-013
	2^-40
constexpr double	TWO_N43 = 1.136868377216160e-013
	2^-43
constexpr double	TWO_N44 = 5.684341886080802e-14
	2^-44
constexpr double	TWO_N46 = 1.4210854715202e-014
	2^-46
constexpr double	TWO_N48 = 3.552713678800501e-15
	2^-46
constexpr double	TWO_N50 = 8.881784197001252e-016
	2^-50
constexpr double	TWO_N51 = 4.44089209850063e-016
	2^-51
constexpr double	TWO_N55 = 2.775557561562891e-017
	2^-55
constexpr double	TWO_N57 = 6.938893903907228e-18
	2^-57
constexpr double	TWO_N59 = 1.73472347597681e-018
	2^-59
constexpr double	TWO_N60 = 8.673617379884036e-19
	2^-60
constexpr double	TWO_N66 = 1.3552527156068805425093160010874271392822265625e-20
	2^-66
constexpr double	TWO_N68 = 3.388131789017201e-21
	2^-68
constexpr double	PI_TWO_N19 = 5.992112452678286e-006
	Pi*2^-19.
constexpr double	PI_TWO_N43 = 3.571577341960839e-013
	Pi*2^-43.
constexpr double	PI_TWO_N31 = 1.462918079267160e-009
	Pi*2^-31.
constexpr double	PI_TWO_N38 = 1.142904749427469e-011
	Pi*2^-38.
constexpr double	PI_TWO_N23 = 3.745070282923929e-007
	Pi*2^-23.
constexpr double	D2R = GNSS_PI / 180.0
	deg to rad
constexpr double	R2D = 180.0 / GNSS_PI
	rad to deg
constexpr double	SC2RAD = GNSS_PI
	semi-circle to radian (IS-GPS)
constexpr double	AS2R = D2R / 3600.0
	arc sec to radian
constexpr double	AU = 149597870691.0
	1 Astronomical Unit AU (m) distance from Earth to the Sun.

Detailed Description

Defines useful mathematical constants and their scaled versions.

Author

Javier Arribas, 2013. jarribas(at)cttc.es

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GNSS-SDR is a Global Navigation Satellite System software-defined receiver. This file is part of GNSS-SDR.

Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors) SPDX-License-Identifier: GPL-3.0-or-later

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Definition in file MATH_CONSTANTS.h.