Intro to jeepr with USRadar data

In [1]:

    

import numpy as np
import matplotlib.pyplot as plt
% matplotlib inline


    

In [2]:

    

import jeepr
jeepr.__version__


    

    
Out[2]:





'0.1.2'

In [3]:

    

from jeepr import Scan


    

In [4]:

    

s = Scan.from_rad('../tests/Multi-01_LINE00A.RA1')


    

In [5]:

    

s.plot()


    

In [6]:

    

s.demean().gain().plot()


    

In [7]:

    

s.log


    

    
Out[7]:





['loaded from rad']

In [8]:

    

s_ = s.resample(100e-12)


    

In [9]:

    

s_.log


    

    
Out[9]:





['loaded from rad', 'resampled 2e-10 s to 1e-10 s']

In [10]:

    

s.time[:9]


    

    
Out[10]:





array([  0.00000000e+00,   2.00000000e-10,   4.00000000e-10,
         6.00000000e-10,   8.00000000e-10,   1.00000000e-09,
         1.20000000e-09,   1.40000000e-09,   1.60000000e-09])

In [11]:

    

s.meta


    

    
Out[11]:





{'ACQUISITION_DATE': '03/02/17',
 'ACQUISITION_TIME': '10:30:31',
 'ANTENNA_TYPE': '3',
 'ANTENNA_TYPE_DETECTED': 'eQUANTUM',
 'GPS_TYPE': 'INTERNAL',
 'MIGRATION_TYPE': 'NONE',
 'NOTE': 'Ver:5.1.1134_Machine:4af33599664f73c57b04',
 'OBSERVER': '',
 'RADAR_HEAD_MARK': '3',
 'SPR_CHANNELS_TOTAL': '3',
 'SPR_CHANNEL_NUM': '1',
 'SPR_FILE_VERSION': '7',
 'SPR_INTERVAL_MARKER': '1',
 'SPR_LINE_COUNT': '1',
 'SPR_LINE_SEPARATION': '1',
 'SPR_MEDIUM_DIELECTRIC': '08.95',
 'SPR_NO_AVERAGES': 'AVG_4',
 'SPR_SAMPLES_PER_SCAN': '256',
 'SPR_SAMPLING_INTERVAL': '200',
 'SPR_SHAFT_INTERVAL': '0.025',
 'SPR_SW_AVERAGES': '32',
 'SPR_TIMER_FREQUENCY': '10',
 'SPR_TRIGGER_MODE': 'SHAFT',
 'TRACE_SORT': 'COMMON_OFFSET',
 'TVG_SLOPE': '15',
 'TVG_START_GAIN': '3',
 'UNITS': 'METERS'}

In [12]:

    

f, p = s.get_spectrum()

plt.plot(f, p)


    

    
Out[12]:





[<matplotlib.lines.Line2D at 0x1199ca6a0>]






    

In [13]:

    

t0 = np.argmax(s.mean(axis=-1))


    

In [14]:

    

u = s.crop(idx=t0)

u.plot()