Cosecant.hpp

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// This file is part of INSTINCT, the INS Toolkit for Integrated
// Navigation Concepts and Training by the Institute of Navigation of
// the University of Stuttgart, Germany.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
/// @file Cosecant.hpp
/// @brief Cosecant tropospheric mapping function
/// @author T. Topp (topp@ins.uni-stuttgart.de)
/// @date 2022-05-26
 
#pragma once
 
namespace NAV
{
 
/// @brief Calculates the mapping factor as cosecant of the elevation
/// @param[in] elevation Angle between the user and satellite [rad]
/// @return Mapping factor for converting tropospheric zenith delay into slant delay
double calcTropoMapFunc_cosecant(double elevation);
 
/// @brief Calculates the mapping factor as cosecant of the elevation (= secant of the zenith distance)
/// @param[in] zenithDistance Zenith distance/angle of the satellite [rad]
/// @return Mapping factor for converting tropospheric zenith delay into slant delay
double calcTropoMapFunc_secant(double zenithDistance);
 
} // namespace NAV