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use makefile to create 4antenna_setup

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Eric Teunis de Boone 2022-10-04 14:52:31 +02:00
parent 5147ddfa1c
commit 5c706a8d4a
2 changed files with 101 additions and 78 deletions
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10
figures/beacon/Makefile
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@ -7,7 +7,9 @@ dist: \
field_singleleft_time.pdf field_singleleft_time.png \
field_singleleft_phase.pdf field_singleleft_phase.png \
field_singlecenter_time.pdf field_singlecenter_time.png \
field_singlecenter_phase.pdf field_singlecenter_phase.png
field_singlecenter_phase.pdf field_singlecenter_phase.png \
antenna_setup_four.pdf antenna_setup_four.png \
antenna_setup_three.pdf antenna_setup_three.png
dist-clean:
rm -v sine_beacon.*
@ -35,3 +37,9 @@ field_singlecenter_time.%: src/beacon_field.py
$< --time $@ single-center
field_singlecenter_phase.%: src/beacon_field.py
$< --phase $@ single-center
antenna_setup_four.%: src/four_antenna_setup.py
$< $@
antenna_setup_three.%: src/four_antenna_setup.py
$< --no-extra $@

159
figures/beacon/src/four_antenna_setup.py Normal file → Executable file
View file

@ -16,6 +16,23 @@ from itertools import combinations
c_light = 3e8 # m/s
class Antenna:
"""
Simple Antenna class
"""
def __init__(self,x=0,y=0,z=0,t0=0,name=""):
self.x = x
self.y = y
self.z = z
self.t = t0
self.name = name
def __repr__(self):
cls = self.__class__.__name__
return f'{cls}(x={self.x!r},y={self.y!r},z={self.z!r},t0={self.t!r},name={self.name!r})'
def distance(x1, x2):
"""
Calculate the Euclidean distance between two locations x1 and x2
@ -29,6 +46,7 @@ def distance(x1, x2):
return np.sqrt( np.sum( (x1-x2)**2 ) )
def phase_mod(phase, low=np.pi):
"""
Modulo phase such that it falls within the
@ -37,30 +55,14 @@ def phase_mod(phase, low=np.pi):
return (phase + low) % (2*np.pi) - low
class Antenna:
"""
Simple Antenna class
"""
def __init__(self,x=0,y=0,z=0,t0=0,name=""):
self.x = x
self.y = y
self.z = z
self.t0 = t0
self.name = name
self.offsets = []
def __repr__(self):
cls = self.__class__.__name__
return f'{cls}(x={self.x!r},y={self.y!r},z={self.z!r},t0={self.t0!r},name={self.name!r})'
def antenna_triangles(antennas):
return combinations(antennas, 3)
def antenna_baselines(antennas):
return combinations(antennas, 2)
def plot_four_antenna_geometry(tx, ants, extra_ant=None, ax=None, line_kwargs={}, scatter_kwargs={}, scatter_zorder=5):
default_line_kwargs = dict( color='grey', lw=3, alpha=0.7)
@ -75,8 +77,14 @@ def plot_four_antenna_geometry(tx, ants, extra_ant=None, ax=None, line_kwargs={}
line_kwargs = {**default_line_kwargs, **line_kwargs}
scatter_kwargs = {**default_scatter_kwargs, **scatter_kwargs}
if extra_ant is not None:
all_ants = ants + [extra_ant]
else:
all_ants = ants
# Plot Antennas + Tx
for i, ant in enumerate([tx] + ants + [extra_ant]):
for i, ant in enumerate([tx] + all_ants):
ax.scatter(ant.x, ant.y, zorder=scatter_zorder, **scatter_kwargs)
ax.annotate(ant.name, (ant.x, ant.y), ha='center', va='center',zorder=scatter_zorder)
@ -86,20 +94,21 @@ def plot_four_antenna_geometry(tx, ants, extra_ant=None, ax=None, line_kwargs={}
ax.plot([tx.x, ant.x], [tx.y, ant.y], **tmp_line_kwargs)
# Lines due to all Antennas (including extra_ant)
line_offset = 0.08*np.array([1,1])
for i, ant_triangle in enumerate(antenna_triangles(ants + [extra_ant])):
tmp_line_kwargs['color'] = None
tmp_line_kwargs['linestyle'] = '--'
tmp_line_kwargs['alpha'] = 0.4
for j, ant in enumerate(antenna_baselines(ant_triangle)):
a, b = ant[0], ant[1]
if j == 1: # fix ordering
a, b == b, a
if extra_ant is not None:
line_offset = 0.08*np.array([1,1])
for i, ant_triangle in enumerate(antenna_triangles(all_ants)):
tmp_line_kwargs['color'] = None
tmp_line_kwargs['linestyle'] = '--'
tmp_line_kwargs['alpha'] = 0.4
for j, ant in enumerate(antenna_baselines(ant_triangle)):
a, b = ant[0], ant[1]
if j == 1: # fix ordering
a, b == b, a
dx, dy = (i-1)*line_offset
dx, dy = (i-1)*line_offset
l = ax.plot([ a.x+dx, b.x+dx], [a.y+dy, b.y+dy], **tmp_line_kwargs)
line_kwargs['color'] = l[0].get_color()
l = ax.plot([ a.x+dx, b.x+dx], [a.y+dy, b.y+dy], **tmp_line_kwargs)
line_kwargs['color'] = l[0].get_color()
# Lines internal to ants triangle
tmp_line_kwargs = line_kwargs
@ -114,9 +123,20 @@ def plot_four_antenna_geometry(tx, ants, extra_ant=None, ax=None, line_kwargs={}
return ax
if __name__ == "__main__":
use_phase = False
correct_time = True
from argparse import ArgumentParser
import os.path as path
import sys
parser = ArgumentParser(description=__doc__)
parser.add_argument("fname", metavar="path/to/figure[/]", nargs="?", help="Location for generated figure, will append __file__ if a directory. If not supplied, figure is shown.")
parser.add_argument("--no-extra", dest='extra', action='store_false', help='Disable the extra (fourth) antenna')
args = parser.parse_args()
if args.fname is not None and path.isdir(args.fname):
args.fname = path.join(args.fname, path.splitext(path.basename(__file__))[0] + ".pdf")
tx = Antenna(name="T", x=-8, y=2, t0=0)
@ -126,42 +146,40 @@ if __name__ == "__main__":
Antenna(name='3', x=1, y= 3, t0=10 ),
]
extra_ant = Antenna(name='4', x=4, y=-1, t0=-6)
if False:#correct_time: # taken from the output of this script
"""
Antenna Triangle(1,2,3)
j=0: 1,2
j=1: 3,1
j=2: 2,3
sigmas: [-2.99999999 9. -6.00000001]
sigmas sum: -8.881784197001252e-16
(Antenna(x=0,y=0,z=0,t0=1,name='1'), Antenna(x=2,y=-3,z=0,t0=4,name='2'), Antenna(x=1,y=3,z=0,t0=10,name='3')) : [0. 2.99999999 9. ]
Antenna Triangle(1,2,4)
sigmas: [-2.99999999 -7.00000001 10. ]
sigmas sum: 0.0
(Antenna(x=0,y=0,z=0,t0=1,name='1'), Antenna(x=2,y=-3,z=0,t0=4,name='2'), Antenna(x=4,y=-1,z=0,t0=-6,name='4')) : [ 0. 2.99999999 -7.00000001]
Antenna Triangle(1,3,4)
sigmas: [-9. -7.00000001 16.00000001]
sigmas sum: 0.0
(Antenna(x=0,y=0,z=0,t0=1,name='1'), Antenna(x=1,y=3,z=0,t0=10,name='3'), Antenna(x=4,y=-1,z=0,t0=-6,name='4')) : [ 0. 9. -7.00000001]
Antenna Triangle(2,3,4)
sigmas: [ -6.00000001 -10. 16.00000001]
sigmas sum: 0.0
(Antenna(x=2,y=-3,z=0,t0=4,name='2'), Antenna(x=1,y=3,z=0,t0=10,name='3'), Antenna(x=4,y=-1,z=0,t0=-6,name='4')) : [ 0. 6.00000001 -10.
"""
print("Running with pre-corrected times")
ants[1].t0 -= 2.99999999
ants[2].t0 -= 9
extra_ant.t0 -= -7
if args.extra:
extra_ant = Antenna(name='4', x=4, y=-1, t0=-6)
all_ants = ants + [extra_ant]
else:
extra_ant = None
all_ants = ants
ax = plot_four_antenna_geometry(tx, ants, extra_ant=extra_ant)
fig = ax.get_figure()
if args.fname is not None:
plt.savefig(args.fname)
else:
plt.show()
if True:
sys.exit(0)
########################
### Lol, show my calculations are right
for i, triangle in enumerate(antenna_triangles(ants + [extra_ant])):
use_phase = False
correct_time = True
if args.extra:
all_ants = ants + [extra_ant]
else:
all_ants = ants
for ant in enumerate(all_ants):
ant.offsets = []
ant.backup_t = []
for i, triangle in enumerate(antenna_triangles(all_ants)):
print("Antenna Triangle({},{},{})".format(*[ant.name for ant in triangle]))
sigma = np.zeros((3))
@ -174,7 +192,7 @@ if __name__ == "__main__":
print('j={}: {},{}'.format(j, a.name, b.name))
phys_Dt = (distance(tx, a) - distance(tx, b))/c_light
meas_Dt = a.t0 - b.t0
meas_Dt = a.t - b.t
if use_phase:
f_beacon = 50e6 # Hz
@ -189,18 +207,18 @@ if __name__ == "__main__":
print(
"Dt'_{},{} = ".format(a.name, b.name)
+ "{}".format(meas_Dt)
+ " = {} - {}".format(a.t0, b.t0)
+ " = {} - {}".format(a.t, b.t)
)
print(
"Dt_{},{} = ".format(a.name, b.name)
+ "{}".format(phys_Dt)
+ " = {} - {}".format(distance(tx, a), distance(tx, b))
)
print(
"sigma_{},{} = ".format(a.name, b.name)
+ "{}".format(sigma[j])
)
print("sigmas:", sigma)
if use_phase:
print("sigmas sum:", phase_mod(np.sum(sigma)))
@ -217,12 +235,9 @@ if __name__ == "__main__":
for i in [1,2]:
triangle[i].offsets.append(-ant_sigma[i])
if correct_time:
triangle[i].backup_t0 = triangle[i].t0
triangle[i].t0 += -ant_sigma[i]
triangle[i].backup_t.append(triangle[i].t)
triangle[i].t += -ant_sigma[i]
if correct_time:
print(ants + [extra_ant])
for i, ant in enumerate(ants + [extra_ant]):
for i, ant in enumerate(all_ants):
print(i, ant.name, ant.offsets)
plt.show()