parser.add_option(
"--doppler-search",
metavar="MIN,MAX,INCR",
default="-7000,7000,200",
help="Doppler search grid: min,max,increment (default %default)")
parser.add_option("--time",
type="int",
default=80,
help="integration time in milliseconds (default %default)")
(options, args) = parser.parse_args()
filename = args[0]
fs = float(args[1])
coffset = float(args[2])
chans = util.parse_list_ranges(options.channel, sep=':')
doppler_search = util.parse_list_floats(options.doppler_search)
ms = options.time
# read first portion of file
ms_pad = ms + 5
n = int(fs * 0.001 * ms_pad)
fp = open(filename, "rb")
x = io.get_samples_complex(fp, n)
# wipe off nominal offset from channel center to GLONASS L2 carrier
nco.mix(x, -coffset / fs, 0)
# resample to 16.384 MHz
input_filename input data file, i/q interleaved, 8 bit signed
sample_rate sampling rate in Hz
carrier_offset offset to B1C carrier in Hz (positive or negative)""")
parser.disable_interspersed_args()
parser.add_option("--prn", default="1-63", help="PRNs to search, e.g. 1,3,7-14,31 (default %default)")
parser.add_option("--doppler-search", metavar="MIN,MAX,INCR", default="-7000,7000,20", help="Doppler search grid: min,max,increment (default %default)")
parser.add_option("--time", type="int", default=80, help="integration time in milliseconds (default %default)")
(options, args) = parser.parse_args()
filename = args[0]
fs = float(args[1])
coffset = float(args[2])
prns = util.parse_list_ranges(options.prn)
doppler_search = util.parse_list_floats(options.doppler_search)
ms = options.time
# read first portion of file
ms_pad = ms + 5
n = int(fs*0.001*ms_pad)
fp = open(filename,"rb")
x = io.get_samples_complex(fp,n)
# resample to 8.192 MHz
fsr = 8192000.0/fs
nco.mix(x,-coffset/fs,0)
h = scipy.signal.firwin(161,4e6/(fs/2),window='hanning')
input_filename input data file, i/q interleaved, 8 bit signed
sample_rate sampling rate in Hz
carrier_offset offset to L1 carrier in Hz (positive or negative)""")
parser.disable_interspersed_args()
parser.add_option("--prn", default="", help="PRNs to search, e.g. 1,3,7-14,31 (default %default)")
parser.add_option("--doppler-search", metavar="MIN,MAX,INCR", default="-7000,7000,200", help="Doppler search grid: min,max,increment (default %default)")
parser.add_option("--time", type="int", default=80, help="integration time in milliseconds (default %default)")
(options, args) = parser.parse_args()
filename = args[0]
fs = float(args[1])
coffset = float(args[2])
prns = (list(b2bi.b2bi_strings.keys()) if not options.prn else util.parse_list_ranges(options.prn))
doppler_search = util.parse_list_floats(options.doppler_search)
ms = options.time
# read first portion of file
ms_pad = ms + 5
n = int(fs*0.001*ms_pad)
fp = open(filename,"rb")
x = io.get_samples_complex(fp,n)
# resample to 3*10.230 MHz
fsr = 3*10230000.0/fs
nco.mix(x,-coffset/fs,0)
h = scipy.signal.firwin(161,12e6/(fs/2),window='hanning')
