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read_xtf_new.m
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read_xtf_new.m
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function read_xtf_new(fname)
fid=fopen("135919_sss_refvraket.xtf",'rb');
chan=[];
sonar=[];
i=0;
tic
while ~feof(fid)
cefa=fread(fid,1,'*uint16');
ht=fread(fid,1,'*uint8',61);
filesize = ftell(fid);
ht=uint16(ht);
if (cefa+ht==64206)
i=i+1;
fseek(fid,filesize-61,'bof');
subchannelnumber=fread(fid,1,'*uint8');
sonar.subchannelnumber(i)=subchannelnumber;
numchanstofollow=fread(fid,1,'*uint16');
sonar.numchanstofollow(i)=numchanstofollow;
reserved1=fread(fid,2,'*uint16');
numbytesthisrecord=fread(fid,1,'*uint32');
sonar.numbytesthisrecord(i)=numbytesthisrecord;
year=fread(fid,1,'*uint16');
sonar.year(i)=year;
month=fread(fid,1,'*uint8');
sonar.month(i)=month;
day=fread(fid,1,'*uint8');
sonar.day(i)=day;
hour=fread(fid,1,'*uint8');
sonar.hour(i)=hour;
minute=fread(fid,1,'*uint8');
sonar.minute(i)=minute;
second=fread(fid,1,'*uint8');
sonar.second(i)=second;
hseconds=fread(fid,1,'*uint8');
sonar.hseconds(i)=hseconds;
julianday=fread(fid,1,'*uint16');
sonar.julianday(i)=julianday;
eventnumber=fread(fid,1,'*uint32');
sonar.eventnumber(i)=eventnumber;
pingnumber=fread(fid,1,'*uint32');
sonar.pingnumber(i)=pingnumber;
soundvelocity=fread(fid,1,'*float');
sonar.soundvelocity(i)=soundvelocity;
oceantide=fread(fid,1,'*float');
sonar.oceantide(i)=oceantide;
reserved2=fread(fid,1,'*uint32');
conductivityfreq=fread(fid,1,'*float');
sonar.conductivityfreq(i)=conductivityfreq;
temperaturefreq=fread(fid,1,'*float');
sonar.temperaturefreq(i)=temperaturefreq;
pressurefreq=fread(fid,1,'*float');
sonar.pressurefreq(i)=pressurefreq;
pressuretemp=fread(fid,1,'*float');
sonar.pressuretemp(i)=pressuretemp;
conductivity=fread(fid,1,'*float');
sonar.conductivity(i)=conductivity;
watertemperature=fread(fid,1,'*float');
sonar.watertemperature(i)=watertemperature;
pressure=fread(fid,1,'*float');
sonar.pressure(i)=pressure;
computedsoundvelocity=fread(fid,1,'*float');
sonar.computedsoundvelocity(i)=computedsoundvelocity;
magx=fread(fid,1,'*float');
sonar.magx(i)=magx;
magy=fread(fid,1,'*float');
sonar.magy(i)=magy;
magz=fread(fid,1,'*float');
sonar.magz(i)=magz;
auxval1=fread(fid,1,'*float');
sonar.auxval1(i)=auxval1;
auxval2=fread(fid,1,'*float');
sonar.auxval2(i)=auxval2;
auxval3=fread(fid,1,'*float');
sonar.auxval3(i)=auxval3;
auxval4=fread(fid,1,'*float');
sonar.auxval4(i)=auxval4;
auxval5=fread(fid,1,'*float');
sonar.auxval5(i)=auxval5;
auxval6=fread(fid,1,'*float');
sonar.auxval6(i)=auxval6;
speedlog=fread(fid,1,'*float');
sonar.speedlog(i)=speedlog;
turbidity=fread(fid,1,'*float');
sonar.turbidity(i)=turbidity;
shipspeed=fread(fid,1,'*float');
sonar.shipspeed(i)=shipspeed;
shipgyro=fread(fid,1,'*float');
sonar.shipgyro(i)=shipgyro;
shipYcoordinate=fread(fid,1,'double');
sonar.shipYcoordinate(i)=shipYcoordinate;
shipXcoordinate=fread(fid,1,'double');
sonar.shipXcoordinate(i)=shipXcoordinate;
shipaltitude=fread(fid,1,'*uint16');
sonar.shipaltitude(i)=shipaltitude;
shipdepth=fread(fid,1,'*uint16');
sonar.shipdepth(i)=shipdepth;
fixtimehour=fread(fid,1,'*uint8');
sonar.fixtimehour(i)=fixtimehour;
fixtimeminute=fread(fid,1,'*uint8');
sonar.fixtimeminute(i)=fixtimeminute;
fixtimesecond=fread(fid,1,'*uint8');
sonar.fixtimesecond(i)=fixtimesecond;
fixtimehsecond=fread(fid,1,'*uint8');
sonar.fixtimehsecond(i)=fixtimehsecond;
sensorspeed=fread(fid,1,'*float');
sonar.sensorspeed(i)=sensorspeed;
kp=fread(fid,1,'*float');
sensorYcoordinate=fread(fid,1,'double');
sonar.sensorYcoordinate(i)=sensorYcoordinate;
sensorXcoordinate=fread(fid,1,'double');
sonar.sensorXcoordinate(i)=sensorXcoordinate;
sonarstatus=fread(fid,1,'*uint16');
rangetofish=fread(fid,1,'*uint16');
bearingtofish=fread(fid,1,'*uint16');
cableout=fread(fid,1,'*uint16');
layback=fread(fid,1,'*float');
cabletension=fread(fid,1,'*float');
sensordepth=fread(fid,1,'*float');
sensorprimaryaltitude=fread(fid,1,'*float');
sensorauxaltitude=fread(fid,1,'*float');
sensorpitch=fread(fid,1,'*float');
sonar.sensorpitch(i)=sensorpitch;
sensorroll=fread(fid,1,'*float');
sonar.sensorroll(i)=sensorroll;
sensorheading=fread(fid,1,'*float');
sonar.sensorheading(i)=sensorheading;
heave=fread(fid,1,'*float');
sonar.heave(i)=heave;
yaw=fread(fid,1,'*float');
sonar.yaw(i)=yaw;
attitudetimetag=fread(fid,1,'*uint32');
sonar.attitudetimetag(i)=attitudetimetag;
dot=fread(fid,1,'*float');
navfixmilliseconds=fread(fid,1,'*uint32');
sonar.navfixmilliseconds(i)=navfixmilliseconds;
computerclockhour=fread(fid,1,'*uint8');
computerclockminute=fread(fid,1,'*uint8');
computerclocksecond=fread(fid,1,'*uint8');
computerclockhsecond=fread(fid,1,'*uint8');
fishpositiondeltaX=fread(fid,1,'*short');
fishpositiondeltaY=fread(fid,1,'*short');
fishpositionerrorcode=fread(fid,1,'*uchar');
reservedspace2=fread(fid,11,'*uint8');
%read XTFPingChanHeader
channelnumber=fread(fid,1,'*uint16');
chan.channelnumber(i)=channelnumber;
downsamplemethod=fread(fid,1,'*uint16');
chan.downsamplemethod(i)=downsamplemethod;
slantrange=fread(fid,1,'*float');
chan.slantrange(i)=slantrange;
groundrange=fread(fid,1,'*float');
chan.groundrange(i)=groundrange;
timedelay=fread(fid,1,'*float');
chan.timedelay(i)=timedelay;
timeduration=fread(fid,1,'*float');
chan.timeduration(i)=timeduration;
secondsperping=fread(fid,1,'*float');
chan.secondsperping(i)=secondsperping;
procflags=fread(fid,1,'*uint16');
chan.procflags(i)=procflags;
frequency=fread(fid,1,'*uint16');
chan.frequency(i)=frequency;
initialgaincode=fread(fid,1,'*uint16');
chan.initialgaincode(i)=initialgaincode;
gaincode=fread(fid,1,'*uint16');
chan.gaincode(i)=gaincode;
bandwidth=fread(fid,1,'*uint16');
chan.bandwidth(i)=bandwidth;
contactnumber=fread(fid,1,'*uint32');
contactclassification=fread(fid,1,'*uint16');
contactsubnumber=fread(fid,1,'*uint8');
contacttype=fread(fid,1,'*uint8');
numsamples=fread(fid,1,'*uint32');
numsamples=double(numsamples);
if numsamples >2000 || numsamples < 50
numsamples=1000;
end
chan.numsample(i)=numsamples;
millivoltscale=fread(fid,1,'*uint16');
contacttimeofftrack=fread(fid,1,'*float');
contactclosenumber=fread(fid,1,'*uint8');
chanreserved2=fread(fid,1,'*uint8');
fixedvsop=fread(fid,1,'*float');
weight=fread(fid,1,'short');
chanreservedspace=fread(fid,4,'*uint8');
sample=fread(fid,[numsamples 1],'*uint16');
chan.sample(:,i)=sample;
% samplestarb=fread(fid,[numsamples 1],'*uint16');
% chan.samplestarb(:,i)=samplestarb;
filesize=ftell(fid);
mod_1=mod(filesize,64);
d_mod=64-mod_1;
fseek(fid,filesize+d_mod,'bof');
end
end
%check data loss
[~,c]=find(sonar.numchanstofollow~=2);
end