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io_bltr_block.py
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'''
Created on Nov 9, 2016
@author: roj- LouVD
'''
import numpy
import os.path
import sys
import time
import datetime
from sys import path
from os.path import dirname
from mimify import HeaderFile
from numpy import size, asarray
from datetime import datetime
from schainpy.model.proc.jroproc_base import ProcessingUnit, Operation
from schainpy.model.data.jrodata import Parameters
from schainpy.model.data.jroheaderIO import RadarControllerHeader, SystemHeader
from schainpy.model.graphics.jroplot_parameters import WindProfilerPlot
from schainpy.model.io.jroIO_base import *
import schainpy
#import madrigal
#import madrigal.cedar
#from madrigal.cedar import MadrigalCatalogRecord
import warnings
from time import gmtime
from math import floor
warnings.simplefilter("error")
from numpy.lib.nanfunctions import nansum
warnings.simplefilter('ignore', FutureWarning)
class testBLTRReader(ProcessingUnit):
def __init__(self):
path = None
startDate = None
endDate = None
startTime = None
endTime = None
startTime = None
endTime = None
isConfig = False
dataOut = None
walk = None
ext = 'swwma'
fileList = []
fileIndex = -1
timezone = None
filename = None
timearray = None
height = None
snr_ref = None
zon_ref = None
ver_ref = None
mer_ref = None
nmodes = None
nchannels = None
nranges = None
year = None
month = None
day = None
lat = None
lon = None
siteFile = None
ProcessingUnit.__init__(self)
self.dataOut = self.createObjByDefault()
self.imode = 0
self.counter_records = 0
self.isConfig = False
self.flagNoMoreFiles = 0
self.buffer = None
def createObjByDefault(self):
dataObj = Parameters()
return dataObj
def info(self):
'''
Experience information
'''
self.hoy = datetime.datetime.now()
place = 'Jicamarca Radio Observatory'
signalchainweb='http://jro-dev.igp.gob.pe:3000/projects/signal-chain/wiki/Manual_de_Desarrollador'
print '{} at {}'.format(self.hoy,place)
print 'Boundary Layer and Tropospheric Radar (BLTR) script, Wind velocities and SNR from *.sswma files'
print '{} \n'.format(signalchainweb)
def run(self, path, startDate, endDate, ext, startTime, endTime):
if not(self.isConfig):
self.setup(path, startDate, endDate, ext)
self.isConfig = True
self.getData()
def setup(self,
path=None,
startDate=None,
endDate=None,
ext=None,
startTime=datetime.time(0, 0, 0),
endTime=datetime.time(23, 59, 59),
timezone=0):
self.info()
self.path = path
if self.path == None:
raise ValueError, "The path is not valid"
if ext == None:
ext = self.ext
self.searchFiles(self.path, startDate, endDate, ext)
self.timezone = timezone
self.ext = ext
self.fileIndex = -1
if not(self.fileList):
raise Warning, "There is no files matching these date in the folder: %s. \n Check 'startDate' and 'endDate' "%(path)
if not(self.setNextFile()):
print 'not next file'
if (startDate!=None) and (endDate!=None):
print "No files in range: %s - %s" %(datetime.datetime.combine(startDate,startTime).ctime(), datetime.datetime.combine(endDate,endTime).ctime())
elif startDate != None:
print "No files in range: %s" %(datetime.datetime.combine(startDate,startTime).ctime())
else:
print "No files"
sys.exit(-1)
def searchFiles(self, path, startDate, endDate, ext=None):
'''
Searching for BLTR rawdata file in path
Creating a list of file to proces included in [startDate,endDate]
Input:
path - Path to find BLTR rawdata files
startDate - Select file from this date
enDate - Select file until this date
ext - Extension of the file to read
'''
fullpath = path
foldercounter = 0
print 'Searching file in %s ' % (fullpath)
fileList0 = glob.glob1(fullpath, "*%s" % ext)
fileList0.sort()
self.fileList = []
self.dateFileList = []
for thisFile in fileList0:
year = thisFile[-14:-10]
if not isNumber(year):
continue
month = thisFile[-10:-8]
if not isNumber(month):
continue
day = thisFile[-8:-6]
if not isNumber(day):
continue
year, month, day = int(year), int(month), int(day)
dateFile = datetime.date(year, month, day)
if not ((startDate <= dateFile) and (endDate > dateFile)):
continue
self.fileList.append(thisFile)
self.dateFileList.append(dateFile)
return 1
def setNextFile(self):
idFile = self.fileIndex
while (True):
idFile += 1
if idFile >= len(self.fileList):
print '\nNo more files in the folder'
print 'Total number of file(s) read : {}'.format(self.fileIndex + 1)
print 'Time of processing : {}'.format(datetime.datetime.now()- self.hoy)
self.flagNoMoreFiles = 1
return 0
if self.isConfig: print '------------------------[Next File]---------------------------'
filename = os.path.join(self.path, self.fileList[idFile])
self.Open(filename)
print '\n[Setting file] (%s) ...' % self.fileList[idFile]
break
self.flagIsNewFile =0
self.fileIndex = idFile
self.filename = filename
print 'File:',self.filename
return 1
def readDataBlock(self):
self.readHeader()
self.dataRecords(0)
print '[New Record] record: {} /{} // file {}/{}'.format(self.counter_records,self.nrecords,self.fileIndex+1,len(self.fileList))
self.setDataBuffer()
self.flagIsNewBlock = 1
if self.counter_records > self.nrecords:
self.flagIsNewFile = 1
return 0
return 1
def setDataBuffer(self):
'''
Storing data from one block
'''
self.t = datetime.datetime(self.year, self.month, self.day)
self.doy = time.localtime(time.mktime(self.t.timetuple())).tm_yday
self.buffer = numpy.squeeze(numpy.array([[self.one_snr],[self.one_zonal],[self.one_vertical],[self.one_meridional],
[self.time],[self.height],[self.fileIndex],
[self.year],[self.month],[self.day],[self.t],[self.doy]]))
self.dataOut.time1 = self.time1
def Open(self, filename):
'''
Opening BLTR rawdata file defined by filename
Inputs:
filename - Full path name of BLTR rawdata file
'''
[dir, name] = os.path.split(filename)
strFile = name.split('.')
self.siteFile = strFile[0] # 'peru2' ---> Piura - 'peru1' ---> Huancayo or Porcuya
self.filename = filename
if os.path.isfile(self.filename) == False:
print 'File do not exist. Check "filename"'
sys.exit(0)
self.h_file = numpy.dtype([
('FMN', '<u4'),
('nrec', '<u4'),
('fr_offset', '<u4'),
('id', '<u4'),
('site', 'u1', (32,))
])
self.pointer = open(self.filename, 'rb') # rb : Read Binary
self.header_file = numpy.fromfile(self.pointer, self.h_file, 1)
self.nrecords = self.header_file['nrec'][0]
self.sizeOfFile = os.path.getsize(self.filename)
self.time = numpy.zeros([2, self.nrecords], dtype='u4')
self.counter_records = 0
self.count = 0
self.flag_initialArray = False
self.year = 0
self.month = 0
self.day = 0
def hasNotDataInBuffer(self):
if self.buffer == None:
return 1
return 0
def getData(self):
'''
Storing data from databuffer to dataOut object
'''
if self.flagNoMoreFiles==1:
self.dataOut.flagNoData = True
print 'No file left to process'
return 0
self.flagIsNewBlock = 0
if self.hasNotDataInBuffer():
if self.flagIsNewFile==0:
self.readNextBlock()
'''RETURN A BLOCK OF DATA'''
if self.flagNoMoreFiles==0:
self.dataOut.data_SNR = self.buffer[0]
self.dataOut.time = self.buffer[4]
self.dataOut.height = self.height
self.dataOut.height= self.height
self.dataOut.data_output = numpy.squeeze(numpy.array([[self.buffer[1]],
[self.buffer[3]],
[self.buffer[2]]]))
#
self.dataOut.day, self.dataOut.month, self.dataOut.year = self.buffer[9], self.buffer[8], self.buffer[7]
self.dataOut.utctimeInit = self.time1
self.dataOut.utctime = self.dataOut.utctimeInit
self.dataOut.counter_records = self.counter_records
self.dataOut.nrecords = self.nrecords
self.setHeader()
self.buffer = None
self.dataOut.flagNoData = False
def readNextBlock(self):
if not(self.setNewBlock()):
return 0
if not(self.readDataBlock()):
return 0
if self.flagIsNewFile:
self.setNextFile()
return 1
def setNewBlock(self):
if self.pointer==None:
return 0
if self.flagIsNewFile:
return 1
if self.counter_records < self.nrecords:
return 1
if not(self.setNextFile()):
return 0
return 1
def readHeader(self):
'''
RecordHeader of BLTR rawdata file
'''
if self.pointer.tell() == self.sizeOfFile:
print 'End of File'
return
self.h_rec1 = numpy.dtype([
('rmn', '<u4'),
('rcounter', '<u4'),
('nr_offset', '<u4'),
('tr_offset', '<u4'),
('time', '<u4'),
('time_msec', '<u4'),
('tag', 'u1', (32,)),
('comments', 'u1', (32,)),
('lat', '<f4'),
('lon', '<f4'),
('gps_status', '<u4'),
('freq', '<u4'),
('freq0', '<u4'),
('nchan', '<u4'),
('delta_r', '<u4'),
('nranges', '<u4'),
('r0', '<u4'),
('prf', '<u4'),
('ncoh', '<u4'),
('npoints', '<u4'),
('polarization', '<i4'),
('rx_filter', '<u4'),
('nmodes', '<u4'),
('dmode_index', '<u4'),
('dmode_rngcorr', '<u4'),
('nrxs', '<u4'),
('acf_length', '<u4'),
('acf_lags', '<u4'),
('sea_to_atmos', '<f4'),
('sea_notch', '<u4'),
('lh_sea', '<u4'),
('hh_sea', '<u4'),
('nbins_sea', '<u4'),
('min_snr', '<f4'),
('min_cc', '<f4'),
('max_time_diff', '<f4')
])
self.header_rec1 = numpy.fromfile(self.pointer, self.h_rec1, 1)
self.lat = self.header_rec1['lat'][0]
self.lon = self.header_rec1['lon'][0]
self.nchannels = self.header_rec1['nchan'][0] / 2
self.kchan = self.header_rec1['nrxs'][0]
self.nranges = self.header_rec1['nranges'][0]
self.deltha = self.header_rec1['delta_r'][0]
self.correction = self.header_rec1['dmode_rngcorr'][0]
self.nmodes = self.header_rec1['nmodes'][0]
self.imode = self.header_rec1['dmode_index'][0]
self.h_rec2 = numpy.dtype([
('antenna_coord', 'f4', (2, self.nchannels)),
('rx_gains', 'u4', (self.nchannels,)),
('rx_analysis', 'u4', (self.nchannels,))
])
self.header_rec2 = numpy.fromfile(self.pointer, self.h_rec2, 1) # header rec2
self.antenna = self.header_rec2['antenna_coord']
self.rx_gains = self.header_rec2['rx_gains']
self.d_rec = numpy.dtype ([
('range', '<u4'),
('status', '<u4'),
('zonal', '<f4'),
('meridional', '<f4'),
('vertical', '<f4'),
('zonal_a', '<f4'),
('meridional_a', '<f4'),
('corrected_fading', '<f4'), # seconds
('uncorrected_fading', '<f4'), # seconds
('time_diff', '<f4'),
('major_axis', '<f4'),
('axial_ratio', '<f4'),
('orientation', '<f4'),
('sea_power', '<u4'),
('sea_algorithm', '<u4'),
('rx_saturation', 'u4', (self.nchannels,)),
('chan_offset', 'u4', (2 * self.nchannels,)),
('rx_amp', 'u4', (self.nchannels,)),
('rx_snr', 'f4', (self.nchannels,)),
('cross_snr', 'f4', (self.kchan,)),
('sea_power_relative', 'f4', (self.kchan,))
])
# Memory allocation
if not(self.flag_initialArray):
self.height = numpy.zeros([2, self.nranges], dtype='f4') + numpy.nan
self.p_zonal = numpy.zeros([self.nrecords, self.nranges, 2], dtype='f4') + numpy.nan
self.p_meridional = numpy.zeros([self.nrecords, self.nranges, 2], dtype='f4') + numpy.nan
self.p_vertical = numpy.zeros([self.nrecords, self.nranges, 2], dtype='f4') + numpy.nan
self.p_snr = numpy.zeros([self.nrecords, self.nranges, self.kchan, 2], dtype='f4') + numpy.nan
self.flag_initialArray = True
self.time[self.imode, self.count] = self.header_rec1['time'][0]
self.time1 = self.header_rec1['time'][0]
tseconds = self.header_rec1['time'][0]
local_t1 = time.localtime(tseconds)
self.year = local_t1.tm_year
self.month = local_t1.tm_mon
self.day = local_t1.tm_mday
self.t = datetime.datetime(self.year, self.month, self.day)
def setHeader(self):
'''
Saving metada on dataOut object
'''
self.dataOut.type = 'Parameters'
self.dataOut.useLocalTime = False
self.dataOut.outputInterval = 157
self.dataOut.timezone = self.timezone
self.dataOut.site = self.siteFile
self.dataOut.nrecords = self.nrecords
self.dataOut.sizeOfFile = self.sizeOfFile
self.dataOut.lat = self.lat
self.dataOut.lon = self.lon
self.dataOut.nchannels = self.nchannels
self.dataOut.kchan = self.kchan
self.dataOut.nranges = self.nranges
self.dataOut.deltha = self.deltha
self.dataOut.correction = self.correction
self.dataOut.nmodes = self.nmodes
self.dataOut.imode = self.imode
self.dataOut.antenna = self.antenna
self.dataOut.rx_gains = self.rx_gains
def dataRecords(self, status_value):
'''
Reading and filtering data block record of BLTR rawdata file, filtering is according to status_value.
Input:
status_value - Array data is set to NAN for values that are not equal to status_value
'''
data_rec = numpy.fromfile(self.pointer, self.d_rec, self.nranges)
status = []
zonal = []
meridional = []
vertical = []
rx_snr = []
index = 0
for rec in data_rec:
status.append(rec['status'])
zonal.append(rec['zonal'])
meridional.append(rec['meridional'])
vertical.append(rec['vertical'])
self.height[self.imode, index] = (rec['range'] - self.correction) / 1000.
numpy.seterr(all='ignore')
index = index + 1
rx_snr.append(rec['rx_snr'])
status = numpy.array(status, dtype='int')
zonal = numpy.array(zonal, dtype='float')
meridional = numpy.array(meridional, dtype='float')
vertical = numpy.array(vertical, dtype='float')
rx_snr = numpy.array(rx_snr, dtype='float')
rx_snr = rx_snr.reshape((self.nranges, self.nchannels))
# FILTERING DATA
stvalue = status_value
zonal[numpy.where(zonal == -9999.)] = numpy.nan
zonal[numpy.where(status != stvalue)] = numpy.nan
self.p_zonal[self.count, :, self.imode] = zonal
self.one_zonal= self.p_zonal[self.count, :, :]
meridional[numpy.where(meridional == -9999.)] = numpy.nan
meridional[numpy.where(status != stvalue)] = numpy.nan
self.p_meridional[self.count, :, self.imode] = meridional
self.one_meridional = self.p_meridional[self.count, :, :]
vertical[numpy.where(vertical == -9999.)] = numpy.nan
vertical[numpy.where(status != stvalue)] = numpy.nan
self.p_vertical[self.count, :, self.imode] = vertical
self.one_vertical = self.p_vertical[self.count, :, :]
rx_snr[numpy.where(rx_snr == -9999.)] = numpy.nan
rx_snr[numpy.where(status != stvalue), :] = numpy.nan
for k in range(self.kchan):
self.p_snr[self.count, :, k, self.imode] = numpy.power(10, rx_snr[:, k] / 10)
self.one_snr = self.p_snr[self.count, :, :, :]
if self.nmodes == 2:
self.count = self.count + self.imode
else:
self.count = self.count + 1
self.imode +=1
self.counter_records = self.counter_records + 1
self.zon_ref = self.p_zonal
self.ver_ref = self.p_vertical
self.mer_ref = self.p_meridional
self.snr_ref = self.p_snr
def Close (self):
'''
Closing BLTR rawdata file
'''
if self.pointer.tell() == self.sizeOfFile:
self.pointer.close()
return
class testBLTRWriter(Operation):
def __init__(self):
Operation.__init__(self)
self.dataOut = Parameters()
self.path = None
self.dataOut = None
self.flagIsNewFile=1
self.ext = ".hdf5"
return
def run(self, dataOut, path , modetowrite,**kwargs):
if self.flagIsNewFile:
flagdata = self.setup(dataOut, path, modetowrite)
self.putData()
return
def setup(self, dataOut, path, modetowrite):
'''
Recovering data to write in new *.hdf5 file
Inputs:
modew -- mode to write (1 or 2)
path -- destination path
'''
self.im = modetowrite-1
if self.im!=0 and self.im!=1:
raise ValueError, 'Check "modetowrite" value. Must be egual to 1 or 2, "{}" is not valid. '.format(modetowrite)
self.dataOut = dataOut
self.nmodes = self.dataOut.nmodes
self.nchannels = self.dataOut.nchannels
self.lat = self.dataOut.lat
self.lon = self.dataOut.lon
self.hcm = 3
self.thisDate = self.dataOut.utctimeInit
self.year = self.dataOut.year
self.month = self.dataOut.month
self.day = self.dataOut.day
self.path = path
self.flagIsNewFile = 0
return 1
def setFile(self):
'''
- Determining the file name for each mode of operation
kinst - Kind of Instrument (mnemotic)
kindat - Kind of Data (mnemotic)
- Creating a cedarObject
'''
lat_piura = -5.17
lat_huancayo = -12.04
lat_porcuya = -5.8
if '%2.2f' % self.lat == '%2.2f' % lat_piura:
self.instMnemonic = 'pbr'
elif '%2.2f' % self.lat == '%2.2f' % lat_huancayo:
self.instMnemonic = 'hbr'
elif '%2.2f' % self.lat == '%2.2f' % lat_porcuya:
self.instMnemonic = 'obr'
else: raise Warning, "The site of file read doesn't match any site known. Only file from Huancayo, Piura and Porcuya can be processed.\n Check the file "
mode = ['_mode1','_mode2']
self.hdf5filename = '%s%4.4d%2.2d%2.2d%s%s' % (self.instMnemonic,
self.year,
self.month,
self.day,
mode[self.im],
self.ext)
self.fullname=os.path.join(self.path,self.hdf5filename)
if os.path.isfile(self.fullname) :
print "Destination path '%s' already exists. Previous file deleted. " %self.fullname
os.remove(self.fullname)
# Identify kinst and kindat
InstName = self.hdf5filename[0:3]
KinstList = [1000, 1001, 1002]
KinstId = {'pbr':0, 'hbr':1, 'obr':2} # pbr:piura, hbr:huancayo, obr:porcuya
KindatList = [1600, 1601] # mode 1, mode 2
self.type = KinstId[InstName]
self.kinst = KinstList[self.type]
self.kindat = KindatList[self.im]
try:
self.cedarObj = madrigal.cedar.MadrigalCedarFile(self.fullname, True)
except ValueError, message:
print '[Error]: Impossible to create a cedar object with "madrigal.cedar.MadrigalCedarFile" '
return
return 1
def writeBlock(self):
'''
- Selecting mode of operation:
bltr high resolution mode 1 - Low Atmosphere (0 - 3km) // bltr high resolution mode 2 - High Atmosphere (0 - 10km)
msnr - Average Signal Noise Ratio in dB
hcm - 3 km
- Filling the cedarObject by a block: each array data entry is assigned a code that defines the parameter to write to the file
GDLATR - Reference geod latitude (deg)
GDLONR - Reference geographic longitude (deg)
GDLAT2 - Geodetic latitude of second inst (deg)
GLON2 - Geographic longitude of second inst (deg)
GDALT - Geodetic altitude (height) (km)
SNL - Log10 (signal to noise ratio)
VN1P2 - Neutral wind in direction 1 (eastward) (m/s), ie zonal wind
VN2P2 - Neutral wind in direction 2 (northward) (m/s), ie meridional wind
EL2 - Ending elevation angle (deg), ie vertical wind
Other parameters: /madrigal3/metadata/parcodes.tab
'''
self.z_zon = self.dataOut.data_output[0,:,:]
self.z_mer =self.dataOut.data_output[1,:,:]
self.z_ver = self.dataOut.data_output[2,:,:]
if self.im == 0:
h_select = numpy.where(numpy.bitwise_and(self.dataOut.height[0, :] >= 0., self.dataOut.height[0, :] <= self.hcm, numpy.isfinite(self.dataOut.height[0, :])))
else:
h_select = numpy.where(numpy.bitwise_and(self.dataOut.height[0, :] >= 0., self.dataOut.height[0, :] < 20, numpy.isfinite(self.dataOut.height[0, :])))
ht = h_select[0]
self.o_height = self.dataOut.height[self.im, ht]
self.o_zon = self.z_zon[ht, self.im]
self.o_mer = self.z_mer[ht, self.im]
self.o_ver = self.z_ver[ht, self.im]
o_snr = self.dataOut.data_SNR[ :, :, self.im]
o_snr = o_snr[ht, :]
ndiv = numpy.nansum((numpy.isfinite(o_snr)), 1)
ndiv = ndiv.astype(float)
sel_div = numpy.where(ndiv == 0.)
ndiv[sel_div] = numpy.nan
if self.nchannels > 1:
msnr = numpy.nansum(o_snr, axis=1)
else:
msnr = o_snr
try:
self.msnr = 10 * numpy.log10(msnr / ndiv)
except ZeroDivisionError:
self.msnr = 10 * numpy.log10(msnr /1)
print 'Number of division (ndiv) egal to 1 by default. Check SNR'
time_t = time.gmtime(self.dataOut.time1)
year = time_t.tm_year
month = time_t.tm_mon
day = time_t.tm_mday
hour = time_t.tm_hour
minute = time_t.tm_min
second = time_t.tm_sec
timedate_0 = datetime.datetime(year, month, day, hour, minute, second)
# 1d parameters
GDLATR = self.lat
GDLONR = self.lon
GDLAT2 = self.lat
GLON2 = self.lon
# 2d parameters
GDALT = self.o_height
SNL = self.msnr
VN1P2 = self.o_zon
VN2P2 = self.o_mer
EL2 = self.o_ver
NROW = len(self.o_height)
startTime = timedate_0
endTime = startTime
self.dataRec = madrigal.cedar.MadrigalDataRecord(self.kinst,
self.kindat,
startTime.year,
startTime.month,
startTime.day,
startTime.hour,
startTime.minute,
startTime.second,
0,
endTime.year,
endTime.month,
endTime.day,
endTime.hour,
endTime.minute,
endTime.second,
0,
('gdlatr', 'gdlonr', 'gdlat2', 'glon2'),
('gdalt', 'snl', 'vn1p2', 'vn2p2', 'el2'),
NROW, ind2DList=['gdalt'])
# Setting 1d values
self.dataRec.set1D('gdlatr', GDLATR)
self.dataRec.set1D('gdlonr', GDLONR)
self.dataRec.set1D('gdlat2', GDLAT2)
self.dataRec.set1D('glon2', GLON2)
# Setting 2d values
for n in range(self.o_height.shape[0]):
self.dataRec.set2D('gdalt', n, GDALT[n])
self.dataRec.set2D('snl', n, SNL[n])
self.dataRec.set2D('vn1p2', n, VN1P2[n])
self.dataRec.set2D('vn2p2', n, VN2P2[n])
self.dataRec.set2D('el2', n, EL2[n])
# Appending new data record
'''
[MADRIGAL3]There are two ways to write to a MadrigalCedarFile. Either this method (write) is called after all the
records have been appended to the MadrigalCedarFile, or dump is called after a certain number of records are appended,
and then at the end dump is called a final time if there were any records not yet dumped, followed by addArray.
'''
self.cedarObj.append(self.dataRec)
print ' [Writing] records {} (mode {}).'.format(self.dataOut.counter_records,self.im+1)
self.cedarObj.dump()
def setHeader(self):
'''
- Creating self.catHeadObj
- Adding information catalog
- Writing file header
'''
self.catHeadObj = madrigal.cedar.CatalogHeaderCreator(self.fullname)
kindatDesc, comments, analyst, history, principleInvestigator = self._info_BLTR()
self.catHeadObj.createCatalog(principleInvestigator="Jarjar",
expPurpose='characterize the atmospheric dynamics in this region where frequently it happens the El Nino',
sciRemarks="http://madrigal3.haystack.mit.edu/static/CEDARMadrigalHdf5Format.pdf")
self.catHeadObj.createHeader(kindatDesc, analyst, comments, history)
self.catHeadObj.write()
print '[File created] path: %s' % (self.fullname)
def putData(self):
if self.dataOut.flagNoData:
return 0
if self.dataOut.counter_records == 1:
self.setFile()
print '[Writing] Setting new hdf5 file for the mode {}'.format(self.im+1)
if self.dataOut.counter_records <= self.dataOut.nrecords:
self.writeBlock()
if self.dataOut.counter_records == self.dataOut.nrecords:
self.cedarObj.addArray()
self.setHeader()
self.flagIsNewFile = 1
def _info_BLTR(self):
kindatDesc = '''--This header is for KINDAT = %d''' % self.kindat
history = None
analyst = '''Jarjar'''
principleInvestigator = '''
Jarjar
Radio Observatorio de Jicamarca
Instituto Geofisico del Peru
'''
if self.type == 1:
comments = '''
--These data are provided by two Boundary Layer and Tropospheric Radar (BLTR) deployed at two different locations at Peru(GMT-5), one of them at Piura(5.17 S, 80.64W) and another located at Huancayo (12.04 S, 75.32 W).
--The purpose of conducting these observations is to measure wind in the differents levels of height, this radar makes measurements the Zonal(U), Meridional(V) and Vertical(W) wind velocities component in northcoast from Peru. And the main purpose of these mensurations is to characterize the atmospheric dynamics in this region where frequently it happens the 'El Nino Phenomenon'
--In Kindat = 1600, contains information of wind velocities component since 0 Km to 3 Km.
--In Kindat = 1601, contains information of wind velocities component since 0 Km to 10 Km.
--The Huancayo-BLTR is a VHF Profiler Radar System is a 3 channel coherent receiver pulsed radar utilising state-of-the-art software and computing techniques to acquire, decode, and translate signals obtained from partial reflection echoes in the troposphere, lower stratosphere and mesosphere. It uses an array of three horizontal spaced and vertically directed receiving antennas. The data is recorded thirty seconds, averaged to one minute mean values of Height, Zonal, Meridional and Vertical wind.
--The Huancayo-BLTR was installed in January 2010. This instrument was designed and constructed by Genesis Soft Pty. Ltd. Is constituted by three groups of spaced antennas (distributed) forming an isosceles triangle.
Station _______ Geographic Coord ______ Geomagnetic Coord
_______________ Latitude _ Longitude __ Latitude _ Longitude
Huancayo (HUA) __12.04 S ___ 75.32 W _____ -12.05 ____ 352.85
Piura (PIU) _____ 5.17 S ___ 80.64 W ______ 5.18 ____ 350.93
WIND OBSERVATIONS
--To obtain wind the BLTR uses Spaced Antenna technique (e.g., Briggs 1984). The scatter and reflection it still provided by variations in the refractive index as in the Doppler method(Gage and Basley,1978; Balsley and Gage 1982; Larsen and Rottger 1982), but instead of using the Doppler shift to derive the velocity components, the cross-correlation between signals in an array of three horizontally spaced and vertically directed receiving antennas is used.
......................................................................
For more information, consult the following references:
- Balsley, B. B., and K. S. Gage., On the use of radars for operational wind profiling, Bull. Amer. Meteor.Soc.,63, 1009-1018, 1982.
- Briggs, B. H., The analysis of spaced sensor data by correations techniques, Handbook for MAP, Vol. 13, SCOTEP Secretariat, University of Illinois, Urbana, 166-186, 1984.
- Gage, K. S., and B.B. Balsley., Doppler radar probing of the clear atmosphere, Bull. Amer. Meteor.Soc., 59, 1074-1093, 1978.
- Larsen, M. F., The Spaced Antenna Technique for Radar Wind Profiling, Journal of Atm. and Ocean. Technology. , Vol.6, 920-937, 1989.
- Larsen, M. F., A method for single radar voracity measurements?, Handbook for MAP,SCOSTEP Secretariat, University of the Illinois, Urban, in press, 1989.
......................................................................
ACKNOWLEDGEMENTS:
--The Piura and Huancayo BLTR are part of the network of instruments operated by the Jicamarca Radio Observatory.
--The Jicamarca Radio Observatory is a facility of the Instituto Geofisico del Peru operated with support from the NSF Cooperative Agreement ATM-0432565 through Cornell University
......................................................................
Further questions and comments should be addressed to:
Radio Observatorio de Jicamarca
Instituto Geofisico del Peru
Lima, Peru
Web URL: http://jro.igp.gob.pe
......................................................................
'''
return kindatDesc, comments, analyst, history, principleInvestigator