UWBIns/lib/gnss/anheader.m

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2025-04-16 20:15:33 +08:00
function [Obs_types, ant_delta,ifound_types,eof] = anheader(file)
%ANHEADER Analyzes the header of a RINEX file and outputs
% the list of observation types and antenna offset.
% End of file is flagged 1, else 0. Likewise for the types.
% Typical call: anheader('pta.96o')
%Kai Borre 09-12-96
%Copyright (c) by Kai Borre
%$Revision: 1.0 $ $Date: 1997/09/23 $
fid = fopen(file,'rt');
eof = 0;
ifound_types = 0;
Obs_types = [];
ant_delta = [];
while 1 % Gobbling the header
line = fgetl(fid);
answer = findstr(line,'END OF HEADER');
if ~isempty(answer), break; end;
if (line == -1), eof = 1; break; end;
answer = findstr(line,'ANTENNA: DELTA H/E/N');
if ~isempty(answer)
for k = 1:3
[delta, line] = strtok(line);
del = str2num(delta);
ant_delta = [ant_delta del];
end;
end
answer = findstr(line,'# / TYPES OF OBSERV');
if ~isempty(answer)
[NObs, line] = strtok(line);
NoObs = str2num(NObs);
for k = 1:NoObs
[ot, line] = strtok(line);
Obs_types = [Obs_types ot];
end;
ifound_types = 1;
end;
end;
%fclose(fid);
%%%%%%%%% end anheader.m %%%%%%%%%