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ZH: Allow the beacon's signal to decrease with distance

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Eric Teunis de Boone 2022-11-10 15:08:00 +01:00
parent 165a7c0361
commit 0966be97b9
1 changed files with 8 additions and 5 deletions
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13
simulations/airshower_beacon_simulation/lib.py
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@ -5,8 +5,8 @@ import numpy as np
from earsim import Antenna from earsim import Antenna
def sine_beacon(f, t, t0=0, amplitude=1): def sine_beacon(f, t, t0=0, amplitude=1, baseline=0):
return amplitude * np.sin(2*np.pi*f*(t-t0)) return amplitude * np.sin(2*np.pi*f*(t-t0)) + baseline
def distance(x1, x2): def distance(x1, x2):
@ -22,8 +22,11 @@ def distance(x1, x2):
return np.sqrt( np.sum( (x1-x2)**2 ) ) return np.sqrt( np.sum( (x1-x2)**2 ) )
def beacon_from(tx, rx, f, t=0, t0=0, c_light=3e8, **kwargs): def beacon_from(tx, rx, f, t=0, t0=0, c_light=3e8, radiate_rsq=True, amplitude=1,**kwargs):
dist = distance(tx,rx)/c_light dist = distance(tx,rx)
t0 = t0 + dist/c_light t0 = t0 + dist/c_light
return sine_beacon(f, t, t0=t0, **kwargs) if radiate_rsq:
amplitude *= 1/(dist**2)
return sine_beacon(f, t, t0=t0, amplitude=amplitude,**kwargs)