Compare commits
2 Commits
c499090cdb
...
be600231e5
Author | SHA1 | Date |
---|---|---|
Sebastien Bourdeauducq | be600231e5 | |
Sebastien Bourdeauducq | aded9ddfbc |
4
dmi.py
4
dmi.py
|
@ -1,3 +1,5 @@
|
|||
from math import ceil
|
||||
|
||||
import SoapySDR
|
||||
import numpy as np
|
||||
import gc
|
||||
|
@ -13,6 +15,7 @@ def main():
|
|||
freq_sample = 1e6
|
||||
freq_base = 1088230e3
|
||||
block_size = 4096
|
||||
throttle_factor = ceil(freq_sample/125e3)
|
||||
|
||||
gui = GUI(freq_sample, freq_base, block_size)
|
||||
try:
|
||||
|
@ -36,7 +39,6 @@ def main():
|
|||
buf_sdr.start()
|
||||
try:
|
||||
throttle = 0
|
||||
throttle_factor = 8
|
||||
position_acc = 0.0
|
||||
while True:
|
||||
buffers = buf_sdr.get()
|
||||
|
|
35
noptica.py
35
noptica.py
|
@ -4,7 +4,7 @@ import threading
|
|||
|
||||
import SoapySDR
|
||||
import numpy as np
|
||||
from scipy.signal import blackmanharris
|
||||
from scipy import signal
|
||||
|
||||
|
||||
class BufferedSDR:
|
||||
|
@ -127,7 +127,7 @@ class Stabilizer:
|
|||
self.wiggle_amplitude = 0.15
|
||||
|
||||
def input(self, samples):
|
||||
spectrum = np.abs(np.fft.fft(samples*blackmanharris(len(samples))))
|
||||
spectrum = np.abs(np.fft.fft(samples*signal.blackmanharris(len(samples))))
|
||||
i = np.argmax(spectrum)
|
||||
amplitude = spectrum[i]
|
||||
|
||||
|
@ -189,3 +189,34 @@ class PositionTracker:
|
|||
self.last_phase = phase[-1]
|
||||
self.last_position = position[-1]
|
||||
return position
|
||||
|
||||
|
||||
class LinearPhaseFilter:
|
||||
def __init__(self, numtaps, *args, **kwargs):
|
||||
self.numtaps = numtaps
|
||||
self.coef = signal.firwin(numtaps, *args, **kwargs)
|
||||
self.state = np.zeros(self.numtaps - 1)
|
||||
|
||||
def input(self, block):
|
||||
output, self.state = signal.lfilter(self.coef, [1.0], block, zi=self.state)
|
||||
return output
|
||||
|
||||
def delay(self):
|
||||
assert(self.numptaps % 2 == 1)
|
||||
return (self.numptaps - 1)//2
|
||||
|
||||
|
||||
class Delay:
|
||||
def __init__(self, block_size, delay_amount):
|
||||
self.block_size = block_size
|
||||
self.delay_amount = delay_amount
|
||||
self.output = np.zeros(block_size)
|
||||
self.next = np.zeros(delay_amount)
|
||||
|
||||
def input(self, block):
|
||||
assert(len(block) == self.block_size)
|
||||
split = self.block_size - self.delay_amount
|
||||
self.output[:self.delay_amount] = self.next
|
||||
self.output[self.delay_amount:] = block[:split]
|
||||
self.next = block[split:]
|
||||
return self.output
|
||||
|
|
Loading…
Reference in New Issue