HITSAT

HITSAT FM telemetry analysis

DK3WN / Mike Rupprecht decoded HITSAT FM packet data as follows.
I, JE9PEL / Mineo Wakita analyzed them according to GS of HITSAT.
The detailed format of FM packet will be opened to the public on
HP of HITSAT one of these days.



http://www.dk3wn.info/sat/afu/sat_hitsat.shtml


(Example of GS)  DHU sensor data
JR8YJT CA5020000002,0914030630,309,322,6,339,348,3A0,1,2FE,92,900,130,133,1E0,121,11F,126,12E
AAAAAA BBBBBCCCCCCC,DDDDDDDDDD,EEE,FFF,G,HHH,III,JJJ,K,LLL,MM,NNN,OOO,PPP,QQQ,RRR,SSS,TTT,UUU


(One of Mike's data)
JR8YJT CA5020000019,0927201435,305,367,8,377,346,387,19,2,A2,A4,128,13E,129,134,124,123,12A


AAAAAA : Callsign ---> JR8YJT
BBBBB : Smart media information ---> CA502
CCCCCCC : Number of Smart media ---> 0000019
DDDDD : Satellite inner time ---> Sep 27, 20:14:35 JST
EEE : Primary battery voltage ---> 305(h) ---> 773(d) ---> 773*(10/1024)=7.55 [V]
FFF : Secondary battery voltage ---> 367(h) ---> 871(d) ---> 871*(10/1024)=8.51 [V]
G : Secondary battery current ---> 8(h) ---> 8(d) ---> 8 [mA]
HHH : Untransaction battery voltage ---> 377(h) ---> 887(d) ---> 887*(10/1024)=8.66 [V]
III : Supply line of 5V ---> 346(h) ---> 838(d) ---> 838*(285/48128)=4.96 [V]
JJJ : Supply line of 5.5V ---> 387(h) ---> 903(d) ---> 903*(285/48128)=5.35 [V]
K : Solar panel current ---> 19(h) ---> 25(d) ---> 25 [mA]
LLL : Unknown voltage ---> 2(h) ---> 2(d) ---> ?
MM : RSSI voltage ---> A2(h) ---> 162(d) ---> 162*(5/256)=3.16 [V]
NNN : +X voltage of temperature sensor ---> A4(h) ---> 164(d) ---> 164*5/1023*(-122.99)+214.94=116.5 [C]
OOO : -X voltage of temperature sensor ---> 128(h) ---> 296(d) ---> 296*5/1023*(-122.99)+214.94=37.2 [C]
PPP : +Y voltage of temperature sensor ---> 13E(h) ---> 318(d) ---> 318*5/1023*(-122.99)+214.94=24.0 [C]
QQQ : -Y voltage of temperature sensor ---> 129(h) ---> 297(d) ---> 297*5/1023*(-122.99)+214.94=36.6 [C]
RRR : +Z voltage of temperature sensor ---> 134(h) ---> 308(d) ---> 308*5/1023*(-122.99)+214.94=30.0 [C]
SSS : -Z voltage of temperature sensor ---> 124(h) ---> 292(d) ---> 292*5/1023*(-122.99)+214.94=39.6 [C]
TTT : Voltage of temperature sensor in transceiver ---> 123(h) ---> 291(d) ---> 291*5/1023*(-122.99)+214.94=40.2 [C]
UUU : Voltage of temperature sensor in battery ---> 12A(h) ---> 298(d) ---> 298*5/1023*(-122.99)+214.94=36.0 [C]


Cf.
http://www.ne.jp/asahi/hamradio/je9pel/hitsatmx.htm
http://www.ne.jp/asahi/hamradio/je9pel/hitsat03.htm


-----------------------------------------------------------------------
HITSAT sensors data of ACS

JH4DHX/3, Ohtani received on 4 Oct 2006:
JR8YJT CA5020080136,0924174229,1EC,1E5,1CD,2,2,0,0
JR8YJT CA502NNNNNNN,MMddhhmmss,AAA,BBB,CCC,DDD,EEE,FFF,GGGH

Sensors Data of the Attitude Control System (FM)
NNNNNNN: data number ---> 0080136
MM: Month ---> Sep.
dd: day ---> 24
hh: hour ---> 17
mm: minute ---> 42
ss: second ---> 29
AAA: magnetic flux density along - z_B axis ---> 1EC(h) ---> 492(d)
BBB: magnetic flux density along - y_B axis ---> 1E5(h) ---> 485(d)
CCC: magnetic flux density along - x_B axis ---> 1CD(h) ---> 461(d)
DDD: angular velocity around - y_B axis ---> 2(h) ---> 2(d)
EEE: sun angle ---> 2(h) ---> 2(d)
FFF: sun pulse ---> 0(h) ---> 0(d)
GGG: sun presence ---> 0(h) ---> 0(d)
H: parity ---> ?

http://www.hit.ac.jp/~satori/hitsat/operation/acs.html


-----------------------------------------------------------------------
JE9PEL/1 received, and decoded with MixW2 on 8 Oct 2006:
JR8YJT CA5020001021,0924164132,1EC,1F0,1B2,2,2,0,0~
JR8YJT CA502NNNNNNN,MMddhhmmss,AAA,BBB,CCC,DDD,EEE,FFF,GGGH

Sensors Data of the Attitude Control System (FM)
NNNNNNN: data number ---> 0001021
MM: Month ---> Sep.
dd: day ---> 24
hh: hour ---> 16
mm: minute ---> 41
ss: second ---> 32
AAA: magnetic flux density along - z_B axis
  ---> 1EC(h) ---> 492(d)---> 492*(5/1023)=2.40 [V] ---> -1.10e5*(2.40-2.51)=12100 [nT]
BBB: magnetic flux density along - y_B axis
  ---> 1F0(h) ---> 496(d) ---> 496*(5/1023)=2.42 [V] ---> -1.16e5*(2.42-2.53)=12760 [nT]
CCC: magnetic flux density along - x_B axis
  ---> 1B2(h) ---> 434(d) ---> 434*(5/1023)=2.12 [V] ---> -9.53e4*(2.12-2.58)=43838 [nT]
DDD: angular velocity around - y_B axis
  ---> 2(h) ---> 2(d) ---> 100*(2-2.5)=50 [deg/s]
EEE: sun angle ---> 2(h) ---> 2(d) ---> 57.5*(2-0.203)=103.33 [deg]
FFF: sun pulse ---> 0(h) ---> 0(d) ---> 0 [V]
GGG: sun presence ---> 0(h) ---> 0(d) ---> 0 [V]
H: parity ---> ?

http://www.hit.ac.jp/~satori/hitsat/operation/acs2.html
http://www.ne.jp/asahi/hamradio/je9pel/61008hit.wav