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[jamsat-bb:4830] FO-29 digital telemetry format
前回、衛星FO-29のCWテレメトリのフォーマットを英訳しましたが、
今回ついでに、デジタルテレメトリのフォーマットを英訳しました。
一番最後に、種々のシステムステータスや、太陽電池パネル温度、
スピン周期などのアナログデータの換算の仕方を具体的に計算しな
がら解説してあります。
参考 http://www.jarl.or.jp/Japanese/3_Fuji/jdtlm.htm
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FO-29 Digital Telemetry Frame Format
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Frame 0 (F0):
00 01 02 03 04 05 06 07 08 09
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
Frame 1 (F1):
00 01 02 03 04 05 06 07 08 09
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
System Status:
bit contents 1 0
------------------------------------
F0_00 0 Frame No. --- 0
1 Main Relay OFF ON
2 DCM ON OFF
3 SRAM ON OFF
4 Packet 0: 1: 0:
5 Packet 0:OFF 0:1200 1:9600
6 JTA ON OFF
7 JTD ON OFF
F0_01 0 GAS ON OFF
1 SAS ON OFF
2 ---
3 ---
4 ---
5 ---
6 ---
7 ---
F0_02 0 UVC ON OFF
1 UVC Level 2 1
2 PCU Mode MANU AUTO
3 PCU Level 0: 1: 1:
4 PCU Level 0:L1 0:L2 1:L3
5 Battery Mode TLIC FULL
6 Battery Logic TLIC FULL
7 ---
F0_03 0 Data Collect Mode ON ---
1 Data Replay Mode ON ---
2 Packet Mode HK ---
3 Packet Mode DATA ---
4 Digitalker Mode ON OFF
5 Digital Tx FM ---
6 ---
7 ---
F1_00 0 Frame No. 1 ---
1 Engineering Data
2 CW Telemetry ON OFF
3 Engineering Data
4 Engineering Data
5 Engineering Data
6 Engineering Data
7 Engineering Data
Spin Period:
bit
F1_11 0 16384 [msec]
1 8192 [msec]
2 4096 [msec]
3 2048 [msec]
4 1024 [msec]
5 512 [msec]
6 256 [msec]
7 128 [msec]
F1_10 0 64 [msec]
1 32 [msec]
2 16 [msec]
3 8 [msec]
4 4 [msec]
5 2 [msec]
6 1 [msec]
7 0.5 [msec]
F1_14 Sun Angle
Analog Data and Equations:
F0_15 Solar Current I=N*9.804 [mA]
F0_16 Battery Current I=-(2000-N*19.6) [mA]
F0_17 Battery Voltage V=N*0.10761 [V]
F0_18 Battery Middle Voltage V=N*0.04817 [V]
F0_19 Bus Voltage V=N*0.09804 [V]
F0_20 +5V Stabilizer Voltage V=N*0.02978 [V]
F0_21 -5V Stabilizer Voltage V=N*0.05956 [V]
F0_22 +10V Stabilizer Voltage V=N*0.059881 [V]
F0_23 JTA Tx Power mW=N*6.4997-98.0863 [mW]
F0_24 JTD Tx Power mW=10^((N*0.04586+21.865)/10) [mW]
F0_24 Battery Cell Temp. T=-N*0.388375+81.883 [C]
F0_25 Structure Temp. 1 T=-N*0.388375+81.883 [C]
F0_26 Structure Temp. 2 T=-N*0.388375+81.883 [C]
F0_27 Structure Temp. 3 T=-N*0.388375+81.883 [C]
F0_28 Structure Temp. 4 T=-N*0.388375+81.883 [C]
F1_12 GAS-X nT=N*490.196 [nT]
F1_13 GAS-Z nT=N*490.196 [nT]
F1_18 Solar Panel Temp. 1 T=N*2.26778-283.67 [T]
F1_19 Solar Panel Temp. 2 T=N*2.26778-283.67 [T]
F1_24 Solar Panel Temp. 3 T=N*2.26778-283.67 [T]
F1_23 JTD Tx Temp. T=-N*0.388375+81.883 [C]
Example:
Frame 0 (F0)
AC 03 63 28 00 02 00 01 02 00
08 00 13 28 BE 86 5F 91 8F B0
AA 52 A8 01 F1 AE B3 B3 B0 B1
Frame 1 (F1)
D5 02 00 09 20 00 D3 40 00 00
CB 28 03 74 11 87 89 7E 8E 84
00 00 00 A4 7A B3 F7 00 00 00
AC(hexadecimal) is 10101100(binary), so
bit data
F0_00 0 AC 0 Frame No. 0
1 0 Main Relay ON
2 1 DCM ON
3 1 SRAM ON
4 0 Packet
5 1 Packet 9600
6 0 JTA OFF
7 1 JTD ON
63(hexadecimal) is 01100011(binary), so
bit data
F0_02 0 63 1 UVC ON
1 1 UVC Level 2
2 0 PCU Mode AUTO
3 0 PCU Level
4 0 PCU Level 1
5 1 Battery Mode TRIC
6 1 Battery Logic TRIC
7 0 ---
F1(hexadecimal) is 241(decimal), so
F0_24 JTD Tx Power is 10^((241*0.04586+21.865)/10)=1957.6 [mW]
8E(hexadecimal) is 142(decimal), so
F1_18 Solar Panel Temp.1 is 142*2.26778-283.67=38.4 [C]
CB(hexadecimal) is 11001011(binary), and 28(hexadecimal) is
00101000(binary), so
bit data
F1_11 0 28 0 16384 [msec]
1 0 8192 [msec]
2 0 4096 [msec]
3 1 2048 [msec]
4 0 1024 [msec]
5 1 512 [msec]
6 0 256 [msec]
7 0 128 [msec]
F1_10 0 CB 1 64 [msec]
1 1 32 [msec]
2 0 16 [msec]
3 1 8 [msec]
4 0 4 [msec]
5 0 2 [msec]
6 1 1 [msec]
7 1 0.5 [msec]
Therefore Spin Period is 2048+512+64+32+8+1+0.5=2665.5 [msec]
And so on.
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Name : JE9PEL/Mineo Wakita, Member of JAMSAT
Mail : je9pel@jamsat.or.jp
URL : http://www.ne.jp/asahi/hamradio/je9pel/
QTH : Yokohama Japan, GL:PM95TJ
Date : Dec 7, 1999
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