Канопус-В
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Satellite "Kanopus-V"

(Under construction)

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Satellite "Canopus-V" was named after star Canopus and project "Vulcano". But in technical documentation with SSTL there was name "Kanopus-V". And now I don't know right name - "Kanopus-V" or "Canopus-V".

Table 1.

Main characteristics of satellite "Kanopus-V" [1]

ПараметрЗначение
Weight, kg 261
Camera weight, kg до 200
Power supply, W 350
Reaction mass 7 years
Memory on board 27 Gb
Band width, Mb/s 2X122,8, Х band
Orbit height, km 510 - 540
Inclination (ССО) 97.4°
Life time, years 5-7
Orientation 3- axes
Orientation accuracy 5 arc min.
Stabilisation accuracy 0,001 degrees/s.
Command line
Band S
Speed in channel «Earth-Board» 9,6 kbit/s
Speed in channel «Board-Earth» 64 kbit/s
Transmitter power 250 mW
Power supply
Solar panels GАs
Accumulator Li-Ion
Engine
Engine type СПД
Fuel xenon
Engine temperature 500°С
Reaction mass 11 – 35 kg
dV 32,2 – 100 m/s
Ground samole distance:
panchromatic 2,1 m
multispectral 10,5 m
Span width from height 510 km in nadir > 20,0 km
Swath from height 510 km roll angle ±40° 1020 km
Revisit time in nadir on equator 5 days (16?)
Shooting time < 700 s
Productivity > 2 mln sq km/day

Table 2.

Satellite "Kanopus-V" cameras

Характеристики

Panchromatic shooting system (PSS)

Multispectral shooting system (MSS)

GSD

2.1 m

10.5 m

Spectral band (level 0,5)

0,52 - 0,85 mkm

0,54 – 0,6;  0,63 – 0,69;  0,69 - 0,72;  0,75 - 0,86

Span width

23.5 km

20.2 km

Focal length

1797,5 mm.

359,5 mm

Эффективное относительное отверстие

1:10,3

1:5,6

Светопропускание

0,7

0,6 – 0,8


One time shooting area (6 microframes)

45,3 km

195 km

fig. 1. Cameras block (big tube- PSS sensor).

 

fig. 2 PSS sensor micromatrix position

fig. 3 MSS sensor micromatrix position

 

Test area Pyatigorsk, Russia

Рис. 4 Pyatigorsk PSS microframes coverage after processing in "GeoKA" software (primary shift is about 500m, resulting error less, than 10m)

Programs for processing microframes of satellite "Canopus-V"

Processing of satellite "Canopus-V" microframes in standart software, such as ERDAS Imgine, ENVI you need to have files with RPC-coefficients. Ther are such data in imagery metadata, but format is unknown for standart software. For creation of this data was developed Meta2Poly utility. It create RPC-files and creates footprints for visualization in GoogleEarth (kml).

You may download it here.

Utility is freeware, it works for 15 days, then you need to register it, FREE OF CHARGE!. Send me Machine ID and I send you registration during 3 days on your e-mail.

Test sample from NTSOMZ site (satellite operator)

Only 78 PSS microframes evaluated for Beijing track. No synthesized images or multispectral image were evaluated. Evaluation was done for images with minimal processing to evaluate georeferencing accuracy from navigational data (without control points). Microframes coverage is shown on figure 5.

Fig. 5. Beijing - PSS microframes coverage

Test track from NTSOMZ site was shooted 1/11/2012 - not very fresh, but it was done after end of flight tests. We thought that accuracy will be better than was declared on State comission (see table 3).

Таблица 3.

Georeferencing accuracy from navigation data, declared on Stata comission 30.oct.2012

Track
(PSS sensor )

Shooting date

Level 2
(average plane rectification)

Level 3
(orthorectification with DEM)

RMS, m

RMS, m

KV1_01104_01098_02_3NP2_01

02.10.12

73.37

28.20

KV1_01105_01103_01_3NP2_08

02.10.12

109.84

30.66

KV1_01126_01123_01_3NP2_08

04.10.12

19.90

14.89

KV1_01126_01125_01_3NP2_08

04.10.12

166.74

20.53

KV1_01126_01126_01_3NP2_08

04.10.12

49.83

49.06

Now (04.feb.2013) accuracy evaluation is done only for 2 microframes. Georeference data taken from metadata - navigation data. Evaluation showed that accuracy is worth than declared. Results are shown in table 4.

Table 4.

PSS Microframes georeference accuracy evaluation

Microframes shift dx shift dy points RMS
KV1_01553_01549_01_419.tif204.2375.33813.0
KV1_01553_01549_01_421.tif245.1693.11819.3

 

 

Literature

1. Gorbunov А.В., Slobodskoy I.N. Космический комплекс оперативного мониторинга техногенных и природных чрезвычайных ситуаций «Kanopus-V» Geomatica, 2010.






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