a3x/gr-digitalhf
1
0
Fork 0
mirror of https://github.com/hb9fxq/gr-digitalhf synced 2024-12-22 15:10:00 +00:00
Code Issues Releases Wiki Activity

cosmetics

Browse source
This commit is contained in:
cmayer 2018-11-04 19:45:57 +01:00
parent bea6f7a3ac
commit fba138b288
1 changed files with 25 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

41
python/physical_layer/MIL_STD_188_110C.py
View file

@ -9,7 +9,7 @@ def n_psk(n,x):
## ---- constellations -----------------------------------------------------------
CONST_DTYPE=np.dtype([('points', np.complex64),
('symbols', np.uint8)])
BPSK=np.array(zip(np.exp(2j*np.pi*np.arange(2)/2), range(2)), CONST_DTYPE)
BPSK=np.array(zip(np.exp(2j*np.pi*np.arange(2)/2), [0,1]), CONST_DTYPE)
QPSK=np.array(zip(np.exp(2j*np.pi*np.arange(4)/4), [0,1,3,2]), CONST_DTYPE)
PSK8=np.array(zip(np.exp(2j*np.pi*np.arange(8)/8), [0,1,3,2,7,6,4,5]), CONST_DTYPE)
QAM16=np.array(
@ -79,7 +79,7 @@ class ScrambleData(object):
## ---- preamble definitions ---------------------------------------------------
## 184 = 8*23
PREAMBLE=np.array(
PREAMBLE=n_psk(8, np.array(
[1,5,1,3,6,1,3,1,1,6,3,7,7,3,5,4,3,6,6,4,5,4,0,
2,2,2,6,0,7,5,7,4,0,7,5,7,1,6,1,0,5,2,2,6,2,3,
6,0,0,5,1,4,2,2,2,3,4,0,6,2,7,4,3,3,7,2,0,2,6,
@ -87,23 +87,27 @@ PREAMBLE=np.array(
0,1,1,1,4,4,0,0,5,7,7,4,7,3,5,4,1,6,5,6,6,4,6,
3,4,3,0,7,1,3,4,7,0,1,4,3,3,3,5,1,1,1,4,6,1,0,
6,0,1,3,1,4,1,7,7,6,3,0,0,7,2,7,2,0,2,6,1,1,1,
2,7,7,5,3,3,6,0,5,3,3,1,0,7,1,1,0,3,0,4,0,7,3],
dtype=np.uint8)
2,7,7,5,3,3,6,0,5,3,3,1,0,7,1,1,0,3,0,4,0,7,3]))
## 103 = 31 + 1 + 3*13 + 1 + 31
REINSERTED_PREAMBLE=np.array(
REINSERTED_PREAMBLE=n_psk(8, np.array(
[0,0,0,0,0,2,4,6,0,4,0,4,0,6,4,2,0,0,0,0,0,2,4,6,0,4,0,4,0,6,4, ## MP+
2,
0,4,0,4,0,0,4,4,0,0,0,0,0, # + D0
0,4,0,4,0,0,4,4,0,0,0,0,0, # + D1
0,4,0,4,0,0,4,4,0,0,0,0,0, # + D2
6,
4,4,4,4,4,6,0,2,4,0,4,0,4,2,0,6,4,4,4,4,4,6,0,2,4,0,4,0,4,2,0], ## MP-
dtype=np.uint8)
4,4,4,4,4,6,0,2,4,0,4,0,4,2,0,6,4,4,4,4,4,6,0,2,4,0,4,0,4,2,0])) ## MP-
## length 31
MINI_PROBE_PLUS=n_psk(8, np.array(
[0,0,0,0,0,2,4,6,0,4,0,4,0,6,4,2,0,0,0,0,0,2,4,6,0,4,0,4,0,6,4]))
## length 31
MINI_PROBE_MINUS=n_psk(8, np.array(
[4,4,4,4,4,6,0,2,4,0,4,0,4,2,0,6,4,4,4,4,4,6,0,2,4,0,4,0,4,2,0]))
## ---- physcal layer class -----------------------------------------------------
class PhysicalLayer(object):
"""Physical layer description for MIL-STD-188-110 Appendix D = STANAG 4539"""
"""Physical layer description for MIL-STD-188-110 Appendix C = STANAG 4539"""
def __init__(self, sps):
"""intialization"""
@ -189,28 +193,24 @@ class PhysicalLayer(object):
return success,doppler
def make_reinserted_preamble(self):
a=np.zeros(len(REINSERTED_PREAMBLE), dtype=[('symb', np.complex64),
a=np.array(zip(REINSERTED_PREAMBLE,
REINSERTED_PREAMBLE),
dtype=[('symb', np.complex64),
('scramble', np.complex64)])
a['symb'] = n_psk(8, REINSERTED_PREAMBLE)
a['scramble'] = n_psk(8, REINSERTED_PREAMBLE)
a['symb'][32:32+3*13] = 0 ## D0,D1,D2
return a
@staticmethod
def get_preamble():
"""preamble symbols + scrambler"""
a=np.zeros(len(PREAMBLE), dtype=[('symb', np.complex64),
return np.array(zip(PREAMBLE,
PREAMBLE),
dtype=[('symb', np.complex64),
('scramble', np.complex64)])
a['symb'] = n_psk(8, PREAMBLE)
a['scramble'] = n_psk(8, PREAMBLE)
##a['symb'][-30:] = 0
return a
@staticmethod
def get_preamble_z(sps):
"""preamble symbols for preamble correlation"""
a = PhysicalLayer.get_preamble()
return np.array([z for z in a['symb'] for i in range(sps)])
return np.array([z for z in PREAMBLE for i in range(sps)])
if __name__ == '__main__':
print(PREAMBLE)
@ -230,3 +230,6 @@ if __name__ == '__main__':
print(PSK8)
print(QPSK)
print(BPSK)
print(MINI_PROBE_PLUS)
print(MINI_PROBE_MINUS)
print(MINI_PROBE_PLUS*MINI_PROBE_MINUS)