def derive(self, airspeed=P('Airspeed True'), grounded=S('Grounded')):
for section in grounded: # zero out travel on the ground
airspeed.array[section.slice] = 0.0 # this is already a copy
repaired_array = repair_mask(
airspeed.array) # to avoid integration hiccups
adist = integrate(repaired_array,
airspeed.frequency,
scale=1.0 / 3600.0)
self.array = adist
def one_direction(rad, hdot, sence, rad_hz):
# Stairway to Heaven is getting a bit old. Getting with the times?
b_diffs = hdot / 60
r_diffs = np.ma.ediff1d(rad, to_begin=b_diffs[0])
diffs = np.ma.where(
np.ma.abs(r_diffs - b_diffs) > 6.0, b_diffs, r_diffs)
height = integrate(diffs,
frequency=rad_hz,
direction=sence,
repair=False)
return height
def one_direction(rad, hdot, sence, rad_hz):
# Stairway to Heaven is getting a bit old. Getting with the times?
# Vertical Speed / 60 = Pressure alt V/S in feet per second
b_diffs = hdot/60
# Rate of change on radalt array = Rad alt V/S in feet per second
r_diffs = np.ma.ediff1d(rad*rad_hz, to_begin=b_diffs[0])
# Difference between ROC greater than 6fps will mean flying over
# the deck; use pressure alt roc when that happens and radio alt
# roc in all other cases
diffs = np.ma.where(np.ma.abs(r_diffs-b_diffs)>6.0*rad_hz, b_diffs, r_diffs)
height = integrate(diffs,
frequency=rad_hz,
direction=sence,
repair=False)
return height
def one_direction(rad, hdot, sence, rad_hz):
# Stairway to Heaven is getting a bit old. Getting with the times?
# Vertical Speed / 60 = Pressure alt V/S in feet per second
b_diffs = hdot/60
# Rate of change on radalt array = Rad alt V/S in feet per second
r_diffs = np.ma.ediff1d(rad*rad_hz, to_begin=b_diffs[0])
# Difference between ROC greater than 6fps will mean flying over
# the deck; use pressure alt roc when that happens and radio alt
# roc in all other cases
diffs = np.ma.where(np.ma.abs(r_diffs-b_diffs)>6.0*rad_hz, b_diffs, r_diffs)
height = integrate(diffs,
frequency=rad_hz,
direction=sence,
repair=False)
return height
def derive(self, airspeed=P('Airspeed True'), grounded=S('Grounded') ):
for section in grounded: # zero out travel on the ground
airspeed.array[section.slice]=0.0 # this is already a copy
repaired_array = repair_mask(airspeed.array) # to avoid integration hiccups
adist = integrate( repaired_array, airspeed.frequency, scale=1.0/3600.0 )
self.array = adist