TRITON-1

ISIS Delft TRITON-1

Triton-1 is a satellite which will serve as a test bed for an experimental receiver, designed to receive Automatic Identification System (AIS) messages from ships. During the first three months after launch, the plan is to characterize the AIS receiver in orbit. After approximately three months of experimenting, its intend to activate a single channel FM to DSB mode UV transponder (similar to AO-16's transponder). The exact transponder uplink frequency in the 435-438MHz band will be announced at that time as well.

NASA-Catalog: 39427

Downlink

TRXUV-0 frequency: 145.815 MHz
TRXUV-1 frequency: 145.860 MHz

Call

Status

ACTIVE

Orbital Parameter

NORAD                   39427
COSPAR designator       2013-066-M  
Inclination             97.776
RA of A. Node           124.519
Eccentricity            0.0118304
Argument of Perigee     260.879
Revs per day            14.64847595
Period                  1h 38m 18s (98.30 min)
Semi-major axis         7 056 km
Perigee x Apogee        594 x 761 km
BStar (drag term)       0.000296070 1/ER
Mean anomaly            97.902


Telemetry

Safe mode beacon (CW)

Radio: alternating every two beacons between TRXUV-0 and TRXUV-1
Modulation: CW / Morse code
Speed: 15 words per minute
Beacon interval: 30 seconds
Beacon length: approx. 10 seconds
Safe mode beacon content

T1  XXXXXXYY
X: character in the range A-Z
Y: character in the range A-Z or number in the range 0-9


 t1 zuzrzdzz   t1 xbmgzdzz   t1 zuzrzdzz   t1 xbmgzdzz
 t1 zuzrzdzz   t1 wbmgzdzz   t1 zuzrzdzz
12.08.2013, 10:44 UTC safe mode cw beacons triton1_triton_22022014_0947 telemetry 22.02.2014

Decoding

Use MixW32 Mode: Packet Mode settings: PSK -> Modem -> VHF 1200 baud (satellite PSK) enable TNC emulation (you need a virtual COM bridge driver e.g. VSP Manager or others)

Use ONLINE_KISS you can download it here configure the corresponding COM bridge port

every MixW decoded packet should be now visible in ONLINE_KISS and a KISS file should be generated

triton_rx_scree

Links und weitere Informationen

http://www.isispace.nl/HAM/

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