def n_const_pointing_model(az, el, lat, lon, alt, dwell_time = 0.1):
'''Model for a n-point beampark with fixed dwell-times.
:param list az: Azimuths in degrees east of north.
:param list el: Elevations in degrees above horizon.
:param float lat: Geographical latitude of radar system in decimal degrees (North+).
:param float lon: Geographical longitude of radar system in decimal degrees (East+).
:param float alt: Geographical altitude above geoid surface of radar system in meter.
:param float dwell_time: Time spent at each azimuth-elevation pair of pointing direction.
'''
assert len(az) == len(el), 'Length of az and el lists do not match ({} and {})'.format(len(az), len(el))
n_const_pointing = rs.RadarScan(
lat = lat,
lon = lon,
alt = alt,
pointing_function = point_n_beampark,
min_dwell_time=dwell_time,
name = '%i beampark scan' %(len(az),),
pointing_coord = 'azel',
)
n_const_pointing.keyword_arguments(
dwell_time = dwell_time,
az = az,
el = el,
)
n_const_pointing._scan_time = len(az)*dwell_time
return n_const_pointing
def n_dyn_dwell_pointing_model(az, el, dwells, lat, lon, alt):
'''Model for a n-point beampark with variable dwell-times.
:param list az: Azimuths in degrees east of north.
:param list el: Elevations in degrees above horizon.
:param list dwells: Times to spend at each azimuth-elevation pair of pointing direction.
:param float lat: Geographical latitude of radar system in decimal degrees (North+).
:param float lon: Geographical longitude of radar system in decimal degrees (East+).
:param float alt: Geographical altitude above geoid surface of radar system in meter.
'''
n_dyn_pointing = rs.RadarScan(
lat = lat,
lon = lon,
alt = alt,
pointing_function = point_n_dyn_beampark,
min_dwell_time=np.min(dwells),
name = 'Dynamic dwell scan',
pointing_coord = 'azel',
)
n_dyn_pointing._scan_time = np.sum(dwells)
n_dyn_pointing.keyword_arguments(
dwell_time = dwells,
az = az,
el = el,
scan_time = n_dyn_pointing._scan_time,
)
return n_dyn_pointing
def sph_rng_model(lat, lon, alt, min_el = 30, dwell_time = 0.1):
sph_rng = rs.RadarScan(
lat = lat,
lon = lon,
alt = alt,
pointing_function = point_sph_rng_scan,
min_dwell_time = dwell_time,
name = 'Spherical random scan',
pointing_coord = 'ned',
)
sph_rng.keyword_arguments(
dwell_time = dwell_time,
min_el = min_el/180.0*np.pi,
state = 86246443,
)
sph_rng._info_str = 'Dwell time: %.2f s, Minimum elevation=%.2f deg' % (dwell_time, min_el,)
sph_rng._scan_time = dwell_time*1000.0
return sph_rng
def ew_fence_model(lat, lon, alt, min_el = 30, angle_step = 1.0, dwell_time = 0.1):
ew_fence = rs.RadarScan(
lat = lat,
lon = lon,
alt = alt,
pointing_function = point_ew_fence_scan,
min_dwell_time = dwell_time,
name = 'East west fence scan',
pointing_coord = 'ned',
)
angles = calculate_fence_angles(min_el = min_el, angle_step = angle_step)
ew_fence.keyword_arguments(
dwell_time = dwell_time,
angles = angles,
)
ew_fence._scan_time = len(angles)*dwell_time
ew_fence._info_str = 'Dwell time: %.2f s, Scan time: %.2f s, Minimum elevation=%.2f deg' % (dwell_time, ew_fence._scan_time, min_el,)
return ew_fence
def beampark_model(az, el, lat, lon, alt, name="Beampark"):
'''A beampark model.
:param float az: Azimuth in degrees east of north.
:param float el: Elevation in degrees above horizon.
:param float lat: Geographical latitude of radar system in decimal degrees (North+).
:param float lon: Geographical longitude of radar system in decimal degrees (East+).
:param float alt: Geographical altitude above geoid surface of radar system in meter.
'''
beampark = rs.RadarScan(
lat=lat,
lon=lon,
alt=alt,
pointing_function=point_beampark,
min_dwell_time=10.0,
name=name,
pointing_coord='azel'
)
beampark.keyword_arguments(
az = az,
el = el,
)
beampark._info_str = 'Dwell time: Inf, Pointing: azimuth=%.2f deg,elevation=%.2f deg' % (az, el,)
return beampark