tle.hpp

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/*
 * perturb -- A modern C++11 wrapper for the SGP4 orbit propagator
 * Version 1.0.0
 * https://github.com/gunvirranu/perturb
 *
 * Licensed under the MIT License <http://opensource.org/licenses/MIT>.
 * SPDX-License-Identifier: MIT
 *
 * Copyright (c) 2022 Gunvir Ranu
 */
 
 
#ifndef PERTURB_TLE_HPP
#define PERTURB_TLE_HPP
 
#include <cstddef>
#ifndef PERTURB_DISABLE_IO
#  include <string>
#endif
 
namespace perturb {
 
constexpr std::size_t TLE_LINE_LEN = 69;
 
enum class TLEParseError {
    NONE,               
    SHOULD_BE_SPACE,    
    INVALID_FORMAT,     
    INVALID_VALUE,      
    CHECKSUM_MISMATCH,  
};
 
struct TwoLineElement {
    // clang-format off
    // Line 1
    char catalog_number[6];             
    char classification;                
    unsigned int launch_year;           
    unsigned int launch_number;         
    char launch_piece[4];               
    unsigned int epoch_year;            
    double epoch_day_of_year;           
    double n_dot;                       
    double n_ddot;                      
    double b_star;                      
    unsigned char ephemeris_type;       
    unsigned int element_set_number;    
    unsigned char line_1_checksum;      
 
    // Line 2
    double inclination;                 
    double raan;                        
    double eccentricity;                
    double arg_of_perigee;              
    double mean_anomaly;                
    double mean_motion;                 
    unsigned long revolution_number;    
    unsigned char line_2_checksum;      
    // clang-format on
 
#ifndef PERTURB_DISABLE_IO
    TLEParseError parse(const char *line_1, const char *line_2);
#endif  // PERTURB_DISABLE_IO
 
#ifndef PERTURB_DISABLE_IO
    TLEParseError parse(const std::string &line_1, const std::string &line_2);
#endif  // PERTURB_DISABLE_IO
};
 
}  // namespace perturb
 
#endif  // PERTURB_TLE_HPP