def handover_const_atten_Det_AA(ser, maxAtten, step):
# AA signal fade in at constant rate; Det signal fade out at constant rate
print("91.7MHz fading in and 105.1 fading out... with step size ", step)
print("Setting preconditions...")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 1, 0, 0, 0, 35, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
print("Preconditions are set.")
var = 0
while (var < maxAtten or var == maxAtten):
print("+++ Input variable = ", var, " +++")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 1, 0, 0, 0, 35-var, 0, 0, 0, var, 0, 0, 0)
ser.write(packet)
# if (var < 35 or var == 35):
# packet = nf_header.setFilterConfig_handover(1, 1, 1, 1, 1, 1, 1, 1, 35-var, 35, 35, 35, var, 0, 0, 0)
# ser.write(packet)
# elif ((var > 35 and var < 70) or var == 70):
# packet = nf_header.setFilterConfig_handover(1, 1, 1, 1, 1, 1, 1, 1, 0, 35-(var-35), 35, 35, 35, var-35, 0, 0)
# ser.write(packet)
# elif ((var > 70 and var < 105) or var == 105):
# packet = nf_header.setFilterConfig_handover(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 35-(var-70), 35, 35, 35, var-70, 0)
# ser.write(packet)
# else:
# packet = nf_header.setFilterConfig_handover(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 35-(var-105), 35, 35, 35, var-105)
# ser.write(packet)
nf_header.getFilterConfig_resp(ser)
var += step
time.sleep(3)
def fade_out_inst_Det(ser):
# Detroit signal instantaneous fade out (from max atten to no atten instantaneously)
print("105.1MHz instantaneous fade out...")
print("Setting preconditions...")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
print("Preconditions are set.")
print("Instantaneously fade out now!")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
def real_handover_Det_AA(ser, speed, wavelengthDet, distanceDet, duration, maxDistDet):
# simulate a realistic handover from AA to Det
# start from MTCA and move at constant speed towards Detroit
print("Setting preconditions...")
# at MTCA, both AA and Det signals are at atten=0
# allow H/U to lock on to Det signal
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
#introduce AA signal
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
print("Preconditions are set.")
# keep track of signal loss of Det
runningLoss = 0
curAtten = 0
for i in range(0, duration):
distanceDet += speed
# handle AA signal attenuation
# if maxDist is reached, turn off signal
if (distanceDet > maxDistDet or distanceDet == maxDistDet):
print ("Time: ", i)
print("Reached max distance.")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
return
else:
runningLoss += nf_header.loss(speed, wavelengthDet, distanceDet)
if (runningLoss >= 1):
runningLoss -= 1
curAtten += 1
print("Time: ", i, ", Current Attenuation: ", curAtten)
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, curAtten, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(1)
else:
time.sleep(1)
def handover_inst_Det_AA(ser):
# Det signal handover to AA signal instantaneously
print("105.1MHz fades out instantaneously; 91.7MHz fades in instantaneously...")
print("Setting preconditions...")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 1, 0, 0, 0, 35, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
print("Preconditions are set.")
print("Instantaneous fading now!")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 35, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
def fade_in_inst_AA(ser):
# AA signal instantaneous fade in (from max atten to no atten instantaneously)
print("91.7MHz instantaneous fade in...")
print("Setting preconditions...")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 0, 0, 0, 0, 35, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
print("Preconditions are set.")
print("Instantaneously fade in now!")
packet = nf_header.setFilterConfig_handover(1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(3)
def real_fade_out_Det(ser, speed, wavelength, distance, duration, maxDist):
# simulate a realistic fade-out of 105.1MHz
# parameters (in SI units): vehicle speed, signal wavelength, distance from MTCA to radio tower, antenna height, test duration,
# max distance for signal cut-off (from Earth curvature)
print("Setting preconditions...")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
print("Preconditions are set.")
runningLoss = 0
curAtten = 0
for i in range(0, duration):
distance += speed
# if maxDist is reached, turn off signal
if (distance > maxDist or distance == maxDist):
print ("Time: ", i)
print("Reached max distance.")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
return
else:
runningLoss += nf_header.loss(speed, wavelength, distance)
if (runningLoss >= 1):
runningLoss -= 1
curAtten += 1
print("Time: ", i, ", Current Attenuation: ", curAtten)
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, curAtten, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(1)
else:
time.sleep(1)
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
def real_fade_in_Det(ser, speed, wavelength, distance, duration, endDist):
# simulate a realistic fade-out of 91.7MHz
# parameters (in SI units): vehicle speed, signal wavelength, distance from MTCA to radio tower, antenna height, test duration,
# max distance for signal cut-off (from Earth curvature)
print("Setting preconditions...")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(45)
print("Preconditions are set.")
runningGain = 0
curGain = 0
for i in range(0, duration):
distance -= speed
# if endDist is reached, set to min attenuation
if (distance < endDist or distance == endDist):
print ("Time: ", i)
print("Reached end distance.")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
return
else:
runningGain += nf_header.loss(speed, wavelength, distance)
if (runningGain >= 1):
runningGain -= 1
curGain += 1
print("Time: ", i, ", Current Gain: ", curGain)
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 8-curGain, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
time.sleep(1)
else:
time.sleep(1)
def signalsOn(ser): # after signals on, radio state goes from band scan to monitoring mode in 10 seconds
print("All channels off...")
packet = nf_header.setFilterConfig_handover(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
def signalsOff(ser): # after signals off, radio state goes from monitoring to AF searching to band scan mode in 35 seconds
print("All channels off...")
packet = nf_header.setFilterConfig_handover(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
ser.write(packet)
nf_header.getFilterConfig_resp(ser)
