STARS

Am 23.01.2009 um 03:54 UTC startete eine H-IIA F15 Rakete vom Tanegashima Space Center in Japan. Hauptnutzulast war GOSAT (Ibuki), der weltweit erste Satellit, der den Klimawandel untersuchen soll. Als Piggiback Payload waren noch 6 weitere Satelliten an Bord. Um 04:27 UTC wurde STARS separiert.

Mother Satellite KU

NASA-Catalog: 33498

Downlink

437.485 MHz FM 1k2 AFSK

Bake

437.305 CW

Call

JR5YBN

Status

CW Bake aktiv

NORAD                   #33498
COSPAR Bezeichnung      2009-002-G  
Inklination (Grad)      98.029
RAAN                    138.727
Excentrizität           0.0013976
ARGP                    59.221
Umläufe pro Tag         14.71265062
Periode                 1h 37m 52s (97.87 Min)
Semi-major axis         7 035 km
Perigäum x Apogäum      647 x 667 km
Bstar (drag Faktor)     0.000054783 1/ER
Mean Anomaly            301.037

erste empfangene Telemetrie

12:05 UTC STARS (M) 437.305 MHz CW sounds noisy
hello, world.
m3 95 40 3c 3e
m5 ff ff 94 ff
hello, world.

15:20 UTC STARS (M) 437.305 MHz
m5 ff ff ff ff
hello, world.
m3 70 44 42 3f
m5 ff ff ff ff
hello, world.

Daughter Satellite KAI

NASA-Catalog: 33498

Downlink

437.465 FM 1k2 AFSK

Bake

437.2725 MHz CW

Call

JR5YBO

Status

CW Bake aktiv

12:03 UTC STARS (D) 437.275 MHz
m5 1d 73 02 6f
hello, world.
m3 76 3a 3a 39
m5 1d 75 01 93
hello, world.
m3 83 39 3a 3a
m5 28 ac 00 6d
hello, world.

STARS CW Telemetry Decoder

Der empfangene String (jeweils 8 Zeichen) für die Werte M2 bis M6 wird in das entsprechende Textfeld eingegeben und die berechneten Telemetriewerte werden übersichtlich angezeigt. Die Daten können in einem ASCII File abgespeichert werden. Zur besseren Unterscheidung im ASCII FIle kann man die Option MOTHER/DOUGHTER wählen. Bei der Berechnung gibt es allerdings keine Unterschiede, es handelt sich lediglich um ein Textfeld.

Mission

This aims to conduct a tether space robot technology demonstration. A verification of tether extension by parent and child satellites will also be carried out.
STARS consists of Mother Satellite and Daughter Satellite connected by tether. Mother Satellite deploys tether having Daughter Satellite at its end. Daughter Satellite has one arm, and tether is attached at its end. Then attitude control by arm motion using tether tension is possible. Main mission is to take pictures of a satellite during tether deployment. For the purpose of the mission:

1. Mother Satellite deploys tether having Daughter Satellite at its end
2. Daughter Satellite controls attitude of CCD camera by robot motion
3. Mother Satellite and Daughter Satellite communicate through Bluetooth.

Daughter Satellite takes a picture of Mother Satellite, and it is transmitted to ground stations through amateur radio frequency. It will be much interested to take a picture of satellite in space.

Telemetrie

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