pymgp.satorb.prtlookangle#

pymgp.satorb.prtlookangle(t, lookangles, flags, titlestr='', tableformat='default')[source]#

Print a table with satellite look angles.

Print a table with zenith and azimuth angles to satellite, off-nadir, azimuth and lookangle from satellite, satellite heading, range, range-rate, and flags for visibility, ascending/descending orbit, right/left looking.

Parameters:
tarray_like with shape (n,) or scalar, of type datetime64, str or float

Universal time as datetime64 object, ISO date string or sequential date number (days since 1970-01-01).

lookanglesarray_like of floats with shape (…,n,8)

Array with the angles (rad), range (m) and range-rate (m/s):

0  incidence angle at the object, which is identical to the zenith angle,
1  azimuth angle from object to the satellite,
2  off-nadir angle at the satellite to the direction of the object,
3  azimuth angle at the satellite in the direction of the object,
4  look angle in the direction of the object with respect to the flight 
   direction of the satellite, 
5  azimuth angle of the flight direction of the satellite 
6  range between satellite and object
7  range rate in the line of sight
flagsarray_like of str with shape (…,n,3)

Array with in the first column a ascending/descending flag ['ASC'|'DSC'], in the 2nd column the left- or right-looking flag ['LL'|'RL'], and in the third column the visibility flag ['VIS|''|<swath>].

titlestrstr or list of str, optional

Title string. Use a list for 3- or more dimensional cases of lookangles, with shape matching dimensions above 2.

tableformat{‘default’, ‘ers’}, optional

Table format. The ‘default’ is ‘ers’.

See also

satlookangle

Examples

>>> t = np.array(['2012-01-04 15:00:00', '2012-01-04 16:00:00', '2012-01-04 17:00:00', '2012-01-04 18:00:00'], dtype='datetime64[ns]')
>>> xsat = [[-3312531.1007, -5646883.8176, 2737195.4374,  5670.7751, -3969.9994, -1280.2560 ],
...         [ 1413410.4872, -7049655.8712,   16233.9739, -1633.0415,  -309.5460,  7358.7436 ],
...         [-2450115.4006,  6613647.9795,  968353.5303, -6085.7029, -1802.9846, -2992.6557 ],
...         [ -649857.9621,  7022897.5289,  968353.5303, -6345.1020,  -161.9056, -2992.6557 ]]
>>> xobj = [ 3924687.7018, 301132.7660, 5001910.7746]

>>> lookangles, flags = satlookangle(t, xsat, xobj)
>>> prtlookangle(t, lookangles, flags)

                        Incidence Satellite  Off-Nadir LookAngle LookAngle
         Satellite Pass     Angle   Azimuth      Angle   Azimuth FlightDir   Heading     Range Rangerate   Flags
                            (deg)     (deg)      (deg)     (deg)     (deg)     (deg)      (km)    (km/s)
2012-01-04T15:00:00.000   132.479   310.847     41.320    30.533   289.102   101.432  9637.695    -1.507   DSC LL 
2012-01-04T16:00:00.000   129.061   264.759     43.437    38.002    50.729   347.273  9230.254    -3.284   ASC RL 
2012-01-04T17:00:00.000   133.693    72.462     40.230   323.433   207.920   115.513  9836.440     4.014   DSC LL 
2012-01-04T18:00:00.000   128.662    84.296     44.263   321.590   206.077   115.513  9076.242     4.408   DSC LL
On this page