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LOFAR2.0
tango
Commits
08090e13
Commit
08090e13
authored
3 years ago
by
Taya Snijder
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Plain Diff
update
parent
f4bd89b9
No related branches found
No related tags found
1 merge request
!194
Resolve L2SS-479 "09 dec 2021 convert pointing to delays"
Changes
2
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2 changed files
tangostationcontrol/tangostationcontrol/beam/delays.py
+4
-25
4 additions, 25 deletions
tangostationcontrol/tangostationcontrol/beam/delays.py
tangostationcontrol/tangostationcontrol/beam/test_delays.py
+23
-0
23 additions, 0 deletions
tangostationcontrol/tangostationcontrol/beam/test_delays.py
with
27 additions
and
25 deletions
tangostationcontrol/tangostationcontrol/beam/
test
.py
→
tangostationcontrol/tangostationcontrol/beam/
delays
.py
+
4
−
25
View file @
08090e13
...
@@ -7,10 +7,11 @@ def subtract(a, b):
...
@@ -7,10 +7,11 @@ def subtract(a, b):
return
numpy
.
array
([
x
-
y
for
x
,
y
in
zip
(
a
,
b
)])
return
numpy
.
array
([
x
-
y
for
x
,
y
in
zip
(
a
,
b
)])
class
tempname
:
class
delay_calculator
:
def
__init__
(
self
,
itrf
:
list
([
float
])):
def
__init__
(
self
,
itrf
:
list
([
float
])):
"""
Return a measure object, configured for the specified location.
"""
"""
Create a measure object, configured for the specified terrestrial location.
"""
measure
=
casacore
.
measures
.
measures
()
measure
=
casacore
.
measures
.
measures
()
frame_location
=
measure
.
position
(
"
ITRF
"
,
*
[
f
"
{
x
}
m
"
for
x
in
itrf
])
frame_location
=
measure
.
position
(
"
ITRF
"
,
*
[
f
"
{
x
}
m
"
for
x
in
itrf
])
...
@@ -55,29 +56,7 @@ class tempname:
...
@@ -55,29 +56,7 @@ class tempname:
reference_dir_vector
=
self
.
get_direction_vector
(
pointing
)
reference_dir_vector
=
self
.
get_direction_vector
(
pointing
)
# # compute the delays for an antennas w.r.t. the reference position
# # compute the delays for an antennas w.r.t. the reference position
antenna_relative_itrf
=
[
subtract
(
pos
,
reference_itrf
)
for
pos
in
antenna_itrf
]
antenna_relative_itrf
=
[
subtract
(
pos
,
self
.
reference_itrf
)
for
pos
in
antenna_itrf
]
delays
=
[
self
.
_get_delay
(
reference_dir_vector
,
relative_itrf
)
for
relative_itrf
in
antenna_relative_itrf
]
delays
=
[
self
.
_get_delay
(
reference_dir_vector
,
relative_itrf
)
for
relative_itrf
in
antenna_relative_itrf
]
return
delays
return
delays
if
__name__
==
'
__main__
'
:
# # create a frame tied to the reference position
reference_itrf
=
[
3826577.066
,
461022.948
,
5064892.786
]
# CS002LBA, in ITRF2005 epoch 2012.5
d
=
tempname
(
reference_itrf
)
# # set the timestamp to solve for
timestamp
=
datetime
.
datetime
(
2021
,
1
,
1
,
0
,
0
,
5
)
d
.
set_measure_time
(
timestamp
)
# compute the delays for an antennas w.r.t. the reference position
antenna_itrf
=
[[
3826923.546
,
460915.441
,
5064643.489
]]
# CS001LBA, in ITRF2005 epoch 2012.5
# # obtain the direction vector for a specific pointing
direction
=
"
J2000
"
,
"
0deg
"
,
"
0deg
"
# calculate the delays based on the set reference position, the set time and now the set direction and antenna positions.
delays
=
d
.
convert
(
direction
,
antenna_itrf
)
# print the delays
import
pprint
pprint
.
pprint
(
delays
)
This diff is collapsed.
Click to expand it.
tangostationcontrol/tangostationcontrol/beam/test_delays.py
0 → 100644
+
23
−
0
View file @
08090e13
from
delays
import
*
if
__name__
==
'
__main__
'
:
# # create a frame tied to the reference position
reference_itrf
=
[
3826577.066
,
461022.948
,
5064892.786
]
# CS002LBA, in ITRF2005 epoch 2012.5
d
=
delay_calculator
(
reference_itrf
)
# # set the timestamp to solve for
timestamp
=
datetime
.
datetime
(
2021
,
1
,
1
,
0
,
0
,
5
)
d
.
set_measure_time
(
timestamp
)
# compute the delays for an antennas w.r.t. the reference position
antenna_itrf
=
[[
3826923.546
,
460915.441
,
5064643.489
]]
# CS001LBA, in ITRF2005 epoch 2012.5
# # obtain the direction vector for a specific pointing
direction
=
"
J2000
"
,
"
0deg
"
,
"
0deg
"
# calculate the delays based on the set reference position, the set time and now the set direction and antenna positions.
delays
=
d
.
convert
(
direction
,
antenna_itrf
)
# print the delays
import
pprint
pprint
.
pprint
(
delays
)
This diff is collapsed.
Click to expand it.
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