Adapt SARAltAmbig to OTB v8
Validation
S4Reunion
In v7.4 :
Latitude of the target = -21.23
Longitude of the target = 55.7
Altitude of the target = 2200
GROUND COORDINATES = 3352947.394358 4915237.207691 -2295947.108267
IMAGE ORBIT
s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002 2277
s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002 12648
MASTER ORBIT SLAVE ORBIT Incidence ALT AMBIG Radial Lateral
12648 2277 37.177622 1928.600 -30.900 -7.460
Ground target --> Satellite Vectors :
Image Orbit North Projection East Projection Vertical Projection
2277 -0.143829 0.586481 0.797091
12648 -0.143821 0.586476 0.797096
In v8 :
Latitude of the target = -21.23
Longitude of the target = 55.7
Altitude of the target = 2200
GROUND COORDINATES = 3352947.394354 4915237.207686 -2295947.108297
IMAGE ORBIT
s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002 2277
s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002 12648
MASTER ORBIT SLAVE ORBIT Incidence ALT AMBIG Radial Lateral
12648 2277 37.177622 1928.573 -30.901 -7.460
Ground target --> Satellite Vectors :
Image Orbit North Projection East Projection Vertical Projection
2277 -0.143829 0.586481 0.797091
12648 -0.143821 0.586476 0.797096
Diapason results : ref_diapason.txt
PAZReunion
In v7.4 :
Latitude of the target = -21.23
Longitude of the target = 55.7
Altitude of the target = 2200
GROUND COORDINATES = 3352947.394358 4915237.207691 -2295947.108267
IMAGE ORBIT
IMAGE_VV_SRA_spot_044 14369
IMAGE_VV_SRA_spot_044 14703
MASTER ORBIT SLAVE ORBIT Incidence ALT AMBIG Radial Lateral
14369 14703 37.125468 35.269 116.650 -168.166
Ground target --> Satellite Vectors :
Image Orbit North Projection East Projection Vertical Projection
14369 -0.129980 0.588891 0.797692
14703 -0.130021 0.589099 0.797531
In v8 :
Latitude of the target = -21.23
Longitude of the target = 55.7
Altitude of the target = 2200
GROUND COORDINATES = 3352947.394354 4915237.207686 -2295947.108297
IMAGE ORBIT
IMAGE_VV_SRA_spot_044 14369
IMAGE_VV_SRA_spot_044 14703
MASTER ORBIT SLAVE ORBIT Incidence ALT AMBIG Radial Lateral
14369 14703 37.125468 35.269 116.650 -168.165
Ground target --> Satellite Vectors :
Image Orbit North Projection East Projection Vertical Projection
14369 -0.129980 0.588891 0.797692
14703 -0.130022 0.589099 0.797531
CSKReunion
In v7.4 :
Latitude of the target = -21.23
Longitude of the target = 55.7
Altitude of the target = 2200
GROUND COORDINATES = 3352947.394358 4915237.207691 -2295947.108267
IMAGE ORBIT
CSKS2_SCS_B_HI_15_VV_RA_SF_20170223023902_20170223023910 49829
CSKS1_SCS_B_HI_15_VV_RA_SF_20170522023843_20170522023850 53858
MASTER ORBIT SLAVE ORBIT Incidence ALT AMBIG Radial Lateral
53858 49829 48.794461 -238.793 75.715 44.531
Ground target --> Satellite Vectors :
Image Orbit North Projection East Projection Vertical Projection
49829 -0.182413 -0.729512 0.659195
53858 -0.182459 -0.729534 0.659158
In v8 :
Latitude of the target = -21.23
Longitude of the target = 55.7
Altitude of the target = 2200
GROUND COORDINATES = 3352947.394354 4915237.207686 -2295947.108297
IMAGE ORBIT
CSKS2_SCS_B_HI_15_VV_RA_SF_20170223023902_20170223023910 49829
CSKS1_SCS_B_HI_15_VV_RA_SF_20170522023843_20170522023850 53858
MASTER ORBIT SLAVE ORBIT Incidence ALT AMBIG Radial Lateral
53858 49829 48.794461 -238.788 75.716 44.531
Ground target --> Satellite Vectors :
Image Orbit North Projection East Projection Vertical Projection
49829 -0.182414 -0.729512 0.659195
53858 -0.182459 -0.729534 0.659158
Conclusions
For the same point : (55.7, -21.23, 2200), ground coordinates seems to be equivalent.
At the end, we retrieve for the three sensors close values for Incidence
, ALT AMBIG
, Radial
and Lateral
.
Thanks to these results, projection functions used by SARAltAmbig
can be considered as checked. FYI, SARAltAmbig
uses :
-
WorldToEcef
fromProjection
-
WorldToSatPositionAndVelocity
fromSarSensorModel
Edited by Gaëlle USSEGLIO