321 lines
10 KiB
C
321 lines
10 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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static struct bnetz_stations {
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const char *standort;
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int gfs;
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const char *coordinates;
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} bnetz_stations[] = {
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/* Standort GFS Koorinaten */
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/* Germany */
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{ "Flensburg", 8, "54o47 09o26" },
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{ "Bredstedt", 2, "54o37 08o58" },
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{ "Eckernfoerde", 5, "54o28 09o50" },
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{ "Kiel", 6, "54o20 10o08" },
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{ "Heide", 7, "54o12 09o06" },
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{ "Eutin", 2, "54o08 10o37" },
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{ "Neumuenster", 1, "54o04 09o59" },
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{ "Luebeck Nord", 5, "53o54 10o38" },
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{ "Cuxhaven", 6, "53o52 08o41" },
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{ "Luebeck Sued", 8, "53o52 10o41" },
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{ "Kaltenkirchen", 4, "53o50 09o58" },
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{ "Hemmoor", 8, "53o42 09o08" },
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{ "Hamburg", 9, "53o34 10o00" },
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{ "Bremerhaven", 2, "53o33 08o35" },
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{ "Wilhelmshaven", 1, "53o31 08o08" },
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{ "Emden", 9, "53o22 07o12" },
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{ "Zeven", 5, "53o18 09o17" },
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{ "Lueneburg", 7, "53o15 10o25" },
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{ "Leer", 3, "53o14 07o27" },
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{ "Oldenburg", 8, "53o09 08o13" },
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{ "Bremen", 7, "53o05 08o48" },
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{ "Uelzen", 4, "52o58 10o33" },
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{ "Luechow", 3, "52o58 11o09" },
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{ "Werlte", 2, "52o51 07o41" },
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{ "Bergen", 2, "52o49 09o58" },
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{ "Hoya", 3, "52o48 09o08" },
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{ "Vechta", 6, "52o44 08o17" },
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{ "Lingen", 7, "52o31 07o19" },
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{ "Berlin Nord", 1, "52o31 13o23" },
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{ "Berlin Sued", 2, "52o30 13o23" },
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{ "Wolfsburg", 5, "52o25 10o47" },
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{ "Hannover", 8, "52o22 09o43" },
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{ "Osnabrueck", 4, "52o17 08o03" },
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{ "Minden", 5, "52o17 08o55" },
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{ "Braunschweig", 1, "52o16 10o31" },
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{ "Burgsteinfurt", 3, "52o09 07o21" },
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{ "Hildesheim", 7, "52o09 09o57" },
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{ "Bielefeld", 7, "52o01 08o31" },
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{ "Alfeld", 6, "51o59 09o50" },
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{ "Muenster", 6, "51o58 07o38" },
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{ "Kleve", 4, "51o47 06o08" },
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{ "Recklinghausen", 5, "51o35 07o10" },
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{ "Wesel", 8, "51o40 06o37" },
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{ "Uslar", 4, "51o40 09o38" },
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{ "Soest", 2, "51o34 08o07" },
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{ "Goettingen", 5, "51o32 09o56" },
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{ "Warburg", 3, "51o30 09o10" },
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{ "Dortmund", 1, "51o31 07o28" },
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{ "Essen", 7, "51o27 07o01" },
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{ "Duisburg", 9, "51o26 06o46" },
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{ "Meschede", 8, "51o21 08o17" },
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{ "Kassel", 7, "51o19 09o30" },
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{ "Wuppertal", 3, "51o16 07o11" },
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{ "Luedenscheid", 4, "51o13 07o38" },
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{ "Duesseldorf", 2, "51o14 06o47" },
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{ "Eschwege", 9, "51o11 10o03" },
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{ "Schmallenberg-Dorlar", 5, "51o08 08o18" },
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{ "Bad Wildungen", 1, "51o07 09o07" },
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{ "Koeln", 5, "50o56 06o57" },
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{ "Biedenkopf", 8, "50o55 08o32" },
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{ "Siegen", 7, "50o53 08o01" },
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{ "Bad Hersfeld", 2, "50o52 09o42" },
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{ "Dueren", 6, "50o48 06o29" },
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{ "Aachen", 4, "50o47 06o05" },
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{ "Bonn", 8, "50o44 07o06" },
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{ "Lauterbach", 4, "50o38 09o24" },
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{ "Lahn-Giessen", 3, "50o35 08o40" },
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{ "Fulda", 6, "50o33 09o41" },
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{ "Limburg", 2, "50o23 08o04" },
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{ "Koblenz", 9, "50o22 07o36" },
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{ "Mayen", 1, "50o20 07o13" },
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{ "Friedberg", 9, "50o20 08o45" },
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{ "Bad Brueckenau", 5, "50o19 09o47" },
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{ "Bad Neustadt", 8, "50o19 10o13" },
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{ "Hof / Saale", 4, "50o19 11o55" },
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{ "Bad Koenigshofen", 1, "50o18 10o25" },
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{ "Coburg", 2, "50o16 10o58" },
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{ "Pruem", 7, "50o12 06o25" },
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{ "St. Gorshausen", 4, "50o09 07o43" },
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{ "Hanau", 7, "50o08 08o55" },
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{ "Frankfurt", 6, "50o07 08o41" },
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{ "Wiesbaden", 5, "50o05 08o14" },
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{ "Bingen", 7, "49o58 07o54" },
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{ "Aschaffenburg", 8, "49o58 09o09" },
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{ "Bamberg", 5, "49o54 10o54" },
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{ "Darmstadt", 1, "49o52 08o39" },
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{ "Marktheidenfeld", 2, "49o51 09o36" },
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{ "Wuerzburg", 9, "49o47 09o56" },
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{ "Trier", 5, "49o45 06o38" },
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{ "Pegnitz", 1, "49o45 11o34" },
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{ "Idar-Oberstein", 8, "49o43 07o19" },
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{ "Mannheim", 3, "49o29 08o28" },
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{ "Kaiserslautern", 2, "49o27 07o46" },
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{ "Nuernberg", 9, "49o27 11o05" },
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{ "Heidelberg", 4, "49o25 08o43" },
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{ "Ansbach", 2, "49o18 10o35" },
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{ "Saarbruecken", 3, "49o14 07o00" },
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{ "Heilbronn", 7, "49o09 09o13" },
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{ "Schwaebisch Hall", 4, "49o07 09o44" },
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{ "Karlsruhe", 9, "49o01 08o24" },
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{ "Regensburg", 7, "49o01 12o05" },
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{ "Pforzheim", 6, "48o54 08o43" },
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{ "Deggendorf", 1, "48o50 12o58" },
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{ "Schwaebisch Gmuend", 1, "48o48 09o48" },
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{ "Stuttgart", 8, "48o47 09o11" },
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{ "Geislingen", 3, "48o37 09o50" },
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{ "Passau", 8, "48o34 13o28" },
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{ "Pfaffenhofen", 1, "48o32 11o31" },
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{ "Landshut", 3, "48o32 12o09" },
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{ "Offenburg", 4, "48o28 07o56" },
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{ "Pfarrkirchen", 6, "48o25 12o55" },
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{ "Ulm", 6, "48o24 09o59" },
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{ "Augsburg", 8, "48o22 10o54" },
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{ "Rottweil", 7, "48o10 08o37" },
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{ "Riedlingen", 1, "48o09 09o28" },
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{ "Muenchen", 4, "48o08 11o34" },
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{ "Wasserburg", 5, "48o03 12o14" },
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{ "Wittlich", 6, "49o59 06o53" },
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{ "Traben-Trarbach", 3, "49o57 07o07" },
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{ "Bayreuth", 6, "49o57 11o35" },
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{ "Volkach", 4, "49o52 10o13" },
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{ "Bad Kreuznach", 9, "49o51 07o52" },
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{ "Weiden", 8, "49o40 12o09" },
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{ "Wadern", 1, "49o31 06o52" },
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{ "Buchen", 1, "49o31 09o19" },
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{ "Bad Mergentheim", 5, "49o30 09o46" },
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{ "Amberg", 2, "49o27 11o51" },
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{ "Rothenburg", 6, "49o23 10o11" },
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{ "Roth", 3, "49o15 11o05" },
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{ "Pirmasens", 5, "49o12 07o36" },
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{ "Crailsheim", 8, "49o08 10o04" },
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{ "Hemau", 4, "49o03 11o47" },
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{ "Regen", 9, "48o58 13o08" },
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{ "Backnang", 9, "48o57 09o26" },
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{ "Baden-Baden", 1, "48o46 08o14" },
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{ "Wildbad", 2, "48o45 08o33" },
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{ "Donauwoerth", 5, "48o42 10o48" },
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{ "Heidenheim", 7, "48o41 10o09" },
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{ "Markt Schwaben", 9, "48o11 11o52" },
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{ "Mindelheim", 3, "48o02 10o28" },
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{ "Freiburg", 5, "47o59 07o51" },
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{ "Donaueschingen", 2, "47o57 08o30" },
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{ "Todtnau", 6, "47o50 07o57" },
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{ "Weilheim", 6, "47o50 11o09" },
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{ "Ravensburg", 4, "47o47 09o37" },
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{ "Bad Toelz", 7, "47o46 11o33" },
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{ "Kempten", 9, "47o44 10o19" },
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{ "Konstanz", 8, "47o40 09o11" },
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{ "Bad Reichenhall", 2, "47o43 12o53" },
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{ "Loerrach", 7, "47o37 07o40" },
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{ "Saeckingen", 1, "47o33 07o57" },
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{ "Garmisch-Partenkirchen", 2, "47o30 11o05" },
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/* Austria */
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{ "Linz", 1, "48o18 14o17" },
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{ "Amstetten", 2, "48o07 14o52" },
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{ "St. Poelten", 3, "08o12 15o37" },
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{ "Wien-West", 1, "48o11 16o21" },
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{ "Wien-Ost", 2, "48o13 16o23" },
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{ "WR-Neustadt", 4, "48o14 16o24" },
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{ "Voecklamarkt", 4, "48o00 13o29" },
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{ "Gmunden", 3, "47o55 13o48" },
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{ "Schwaz", 8, "47o21 11o42" },
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{ "Salzburg", 3, "47o48 13o02" },
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{ "Innsbruck", 1, "47o16 11o23" },
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{ "Bruck", 3, "47o25 15o16" },
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{ "Graz", 5, "47o04 15o26" },
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/* Luxemburg */
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{ "Neidhausen", 9, "50o02 06o04" },
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{ "Luxemburg", 9, "49o37 06o08" },
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/* Netherlands */
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{ "Groningen", 8, "53o13 06o34" },
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{ "Leeuwarden", 2, "53o12 05o48" },
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{ "Winschoten", 1, "53o09 07o02" },
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{ "Smilde", 5, "52o57 06o27" },
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{ "Tjerkgaast", 4, "52o54 05o41" },
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{ "Wieringermeer", 8, "52o51 05o02" },
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{ "Coevorden", 9, "52o40 06o44" },
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{ "Alkmaar", 9, "52o38 04o45" },
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{ "Lelystad", 3, "52o31 05o28" },
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{ "Zwolle", 6, "52o31 06o05" },
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{ "Amsterdam", 5, "52o22 04o53" },
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{ "Markelo", 2, "52o15 06o42" },
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{ "Ugchelen", 8, "52o10 05o54" },
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{ "Utrecht", 1, "52o05 05o07" },
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{ "'s-Gravenzande", 6, "52o00 04o10" },
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{ "Rotterdam", 4, "51o56 04o29" },
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{ "Megen", 7, "51o49 05o34" },
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{ "Loon op Zand", 9, "51o38 05o05" },
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{ "Roosendaal", 2, "51o32 04o27" },
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{ "Goes", 5, "51o30 03o53" },
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{ "Mierlo", 5, "51o26 05o37" },
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{ "Venlo", 1, "51o22 06o10" },
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{ "Eys", 3, "50o50 05o55" },
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{ NULL, 0, NULL }
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};
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double lat_from_coordinates(const char *string)
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{
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if (strlen(string) != 11)
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abort();
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if (string[0] < '0' || string[0] > '9')
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abort();
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if (string[1] < '0' || string[1] > '9')
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abort();
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if (string[2] != 'o')
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abort();
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if (string[3] < '0' || string[3] > '9')
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abort();
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if (string[4] < '0' || string[4] > '9')
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abort();
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return (double)(string[0] - '0') * 10.0 +
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(double)(string[1] - '0') +
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(double)(string[3] - '0') / 6.0 +
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(double)(string[4] - '0') / 60.0;
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}
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double lon_from_coordinates(const char *string)
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{
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if (strlen(string) != 11)
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abort();
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if (string[6] < '0' || string[6] > '9')
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abort();
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if (string[7] < '0' || string[7] > '9')
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abort();
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if (string[8] != 'o')
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abort();
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if (string[9] < '0' || string[9] > '9')
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abort();
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if (string[10] < '0' || string[10] > '9')
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abort();
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return (double)(string[6] - '0') * 10.0 +
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(double)(string[7] - '0') +
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(double)(string[9] - '0') / 6.0 +
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(double)(string[10] - '0') / 60.0;
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}
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#define EQUATOR_RADIUS 6378137.0
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#define POLE_RADIUS 6356752.314
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#define PI M_PI
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void station_list(void)
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{
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int i;
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printf("List of all base stations:\n");
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for (i = 0; bnetz_stations[i].standort; i++) {
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printf("%s (%.2f<EFBFBD> N %.2f<EFBFBD> E)\n", bnetz_stations[i].standort, lat_from_coordinates(bnetz_stations[i].coordinates), lon_from_coordinates(bnetz_stations[i].coordinates));
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}
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}
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/* convert geo coordinates (lon/lat) to space coordinates in meters (x/y/z) */
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static void geo2space(double *x, double *y, double *z, double lat, double lon)
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{
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*z = sin(lat / 180.0 * PI) * POLE_RADIUS;
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*x = sin(lon / 180.0 * PI) * cos(lat / 180.0 * PI) * EQUATOR_RADIUS;
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*y = -cos(lon / 180.0 * PI) * cos(lat / 180.0 * PI) * EQUATOR_RADIUS;
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}
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/* calculate distance */
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static double distinspace(double x1, double y1, double z1, double x2, double y2, double z2)
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{
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double x = x1 - x2;
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double y = y1 - y2;
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double z = z1 - z2;
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return sqrt(x * x + y * y + z * z);
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}
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int get_station_by_coordinates(double lat, double lon)
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{
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double dist, min = 0.0;
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int i, min_i = 0;
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double x, y, z;
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double s_lat, s_lon;
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double s_x, s_y, s_z;
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geo2space(&x, &y, &z, lat, lon);
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for (i = 0; bnetz_stations[i].standort; i++) {
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s_lat = lat_from_coordinates(bnetz_stations[i].coordinates);
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s_lon = lon_from_coordinates(bnetz_stations[i].coordinates);
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geo2space(&s_x, &s_y, &s_z, s_lat, s_lon);
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dist = distinspace(x, y, z, s_x, s_y, s_z);
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if (i == 0 || dist < min) {
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min = dist;
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min_i = i;
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}
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}
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/* don't allow distance more than 100KM */
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if (min > 100000) {
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fprintf(stderr, "Given coordinates are more than 100 km away from base station.\n");
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return 0;
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}
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printf("Closest base station: %s (distance = %.2f km)\n", bnetz_stations[min_i].standort, min / 1000.0);
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printf(" Gruppenfreisignal = %d\n", bnetz_stations[min_i].gfs);
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return bnetz_stations[min_i].gfs;
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}
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