This application lets you to convert Keps to TLE Format: name of satellite, mass of satellite, catalog number,... ****************************************************** *New in this version: *------Modification of the code with more convenience functions for users. *------Modification of the code with automatic update of new kep satellites with correct catalog numbers. *------Modification of the code with a graphical user interface in french. *------Modification of the code with a graphical user interface in English. *------Modification of the code for double saving the TLE and the TLEX files. *------Modification of the code for satellites with a very long number of orbital elements (over 1023) to save the keplerians for only the first 2000 elements (2000 means to save the last 1203 elements, which are not currently used). *------Modification of the code to set the exo-centric elements if they are not set in the KEPS file (in other words, if the KEPS file is provided only by the orbital elements). *------Modification of the code to be able to convert a three line file to two line file or vice-versa. *------Convertion of Keplarian Elements for GEO satellites to TLE. *------Convertion of Keplarian Elements for MEO satellites to TLE. *------Convertion of Keplarian Elements for ILE satellites to TLE. *------Convertion of Keplarian Elements for KLE satellites to TLE. *------Convertion of Keplarian Elements for IDL satellites to TLE. *------Convertion of Keplarian Elements for DLR satellites to TLE. *------Convertion of Keplarian Elements for QZ satellites to TLE. *------Convertion of Keplarian Elements for QQ satellites to TLE. *------Convertion of Keplarian Elements for DLR satellites with exo-centric elements to TLE. *------Convertion of Keplarian Elements for IDL satellites with exo-centric elements to TLE. *------Convertion of Keplarian Elements for MEO satellites with exo-centric elements to TLE. *------Convertion of Keplarian Elements for GEO satellites with exo-centric elements to TLE. *------Convertion of Keplarian
2 FLAGS2 4 FLAGS ================================================= The application support the following flags : FLAG_CHECK_DIFFICULTY: check if a satellite has problems for sure FLAG_NEW_MIG: New model for MIG FLAG_NEW_TLE: New model for TLE FLAG_UNITY: Insert a new satellite without perturbations FLAG_PROCESS_NAC_TLE: Process the satellite NAC element for TLE FLAG_FORCE_UNITY: Force the unity flag FLAG_TLE_CHANGED_ONLY: Only check the TLE element. Don't change the keplarian elements FLAG_CLEAR_NAC_TLE_LIST: If the unity flag is set, delete the NAC list from the TLE file FLAG_MODIFY_TLE_CHANGES: Modify the keplarian elements (b-V, L1b,...) when the unity flag is set FLAG_PRINT_TLE_ERRORS: Print the file of errors First check FLAG_TLE_CHANGED_ONLY to define if you want to check keplarian elements (copy/paste them) only or TLE elements only. Then you can check FLAG_FORCE_UNITY to modify the model if it is incompatible with your set keplarian elements. This flag is very important when you want to use a model that is not the current one. Finally check FLAG_CHECK_DIFFICULTY and FLAG_NEW_TLE to do some tests. If all this is ok you may proceed to enter the keplerian elements of a satellite. On the top you see the currently selected satellites and you can see if they have errors. SCREENSHOT The fields are just in order : catalog_number_lh_short NAC_identifier_lh_short NAC_identifier_bh_short cd_lh_short cd_bh_short ephemeris_short perigee_short apogee_short period_short eccentricity_short Ix_short Iy_short epoch_short source_flag_lh_short source_flag_bh_short SCREENSHOT 2 When FL b78a707d53
This is the required information for building a TLE file 1. Catalog number (default). Do not use this field if your satellite is managed through the "Catalog" function of Sat_Explorer. 2. Ephemeris (default). 3. Perigee (in solar system), in meters. 4. Apogee (in solar system), in meters. 5. Perigee altitude, in meters. 6. Apogee altitude, in meters. 7. Argument of perigee, in radians. 8. Argument of perigee altitude, in radians. 9. Argument of longitude of ascending node, in radians. 10. Argument of inclination, in radians. 11. Argument of mean anomaly, in radians. 12. Origin longitude, in radians. 13. Origin latitude, in degrees. 14. Destination longitude, in radians. 15. Destination latitude, in degrees. 16. Date and time of first observation, in local time. Do not use this field if your satellite does not have observations (use the "Observations" field instead). 17. Date and time of the end of observations, in local time. Do not use this field if your satellite does not have observations (use the "Observations" field instead). If you have access to the data for your satellite, you may also use it to fill the following fields : 1. Integer number of observations. The program will automatically detect when the observation period is finished. If it does not, then use the "Not available" field. 2. From the date of the first observation. The program will detect when the first observation is made and automatically fill in the other fields. You will be able to choose between the date and time of the start of the observation period or the time at which the first observation was made. 3. From the date of the last observation. The program will automatically fill in the other fields. You will be able to choose between the date and time of the start of the observation period or the time at which the last observation was made. Note: You may enter an observation value that is "Not available" in the date and time fields. If the date and time of the last observation and the start of the observation period are the same, then a value "0" may be used. For the conversion of the observation to the Julian day
KepsToTLE is a simple program that allows to create, edit and save Two-Line-Element files (TLE). With this application, you can create a Two-Line-Element file (TLE) from keplarian elements such as those provided by AMSAT for example. For each satellite, the user must fill the relevant fields (Copy/paste is a fast way to fill these fields). When all fields are filled, the user clicks the button "Add" to create a new record in the TLE file. The program controls the value that has been entered in each field and, if all seems correct, it creates the 2 lines. Then the user may create another record with the keplerians of another satellite. Clicking again "Add" will create 2 new lines. To save the TLE file, click the button "Save" The following version 3.2 updates have been applied to KepsToTLE 1. NEW FEATURES : (a) Text to Boolean conversion function that allows to convert strings ( in case where the selected satellite is not a keplarian object and the catalog number of the satellite is known) to true/false values. (b) Description of each keplerian (orbit/velocity). (the orbit description may also be created using the satellite catalog number). (c) Correction of the orbital elements for the inclination of the orbital plane for the satellite. (d) It is now possible to display the satellite catalog number instead of its name. (e) It is now possible to display and update the satellite catalog number. (f) It is now possible to update the date of the catalog number and the update is done if the date of the catalog number is different from the current date. (g) It is now possible to update the catalog number that will be displayed instead of the catalog number in the TLE file. (h) It is now possible to search for a satellite by the catalog number or the name. (i) It is now possible to search for a satellite by its keplarian elements. (j) Satellite catalog number and date, the catalog number of the TLE file and the catalog number of the satellite are now displayed in the main menu. (k) It is now possible to edit a satellite using its catalog number. 2. BUG FIXES: (a) By default, the program is now waiting for the user's confirmation before launching the navigation panel. (b) The catalog number of the TLE file and the catalog number of the satellite are now displayed in the main menu. (c) The last successful launch of the program is now saved when the user closes the program. (d) The program now works correctly when the satellite is on the Moon. (e) The satellite catalog number and the catalog
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