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● (No.185) 衛星FO-29 ＣＷテレメトリ フォーマット (1999年12月1日)
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衛星FO-29のCWテレメトリのフォーマットについて、外国局から問い合わせが
ありました。 次のJARLのホームページをもとに基本の所を英訳し、メールを
送りました。(このホームページの中の記載ミスの部分は訂正しました。)
最後にサンプルの計算例を載せてあります。参考まで。
http://www.jarl.or.jp/Japanese/3_Fuji/
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FO-29 CW Telemetry Frame Format
-------------------------------
HI HI 1A 1B 1C 1D 2A 2B 2C 2D 3A 3B 3C 3D 4A 4B 4C 4D 5A 5B 5C 5D 6A 6B 6C
System Status:
bit contents 1 0
--------------------------------
1A 0 Main Relay OFF ON
1 DCM ON OFF
2 SRAM ON OFF
3 Packet 1200 9600 or OFF
4 Packet 9600 1200 or OFF
5 JTA ON OFF
6 JTD ON OFF
7 GAS ON OFF
1B 0 SAS ON OFF
1 UVC ON OFF
2 UVC Level 2 1
3 PCU Mode MANU AUTO
4 PCU Level 2 1 or 3
5 PCU Level 3 1 or 2
6 Battery Mode TLIC FULL
7 Battery Logic TLIC FULL
1C 0 Engineering Data ----
1 Engineering Data ----
2 Engineering Data ----
3 Engineering Data ----
4 Digitalker Mode ON OFF
5 Engineering Data ----
6 UVC ACT/PAS ACT PAS
7 CPU RUN/RESET RUN RESET
1D Engineering Data
Analog Data and Equations:
2A Engineering Data
2B Engineering Data
2C Spin Period
2D Spin Period
3A Attitude Status
3B Sun Angle
3C GAS-Z nT=N*490.196 [nT]
3D GAS-X nT=N*490.196 [nT]
4A Solar Current I=N*9.804 [mA]
4B Battery Current I=-(2000-N*19.6) [mA]
4C Battery Voltage V=N*0.10761 [V]
4D Battery Middle Voltage V=N*0.04817 [V]
5A Bus Voltage V=N*0.09804 [V]
5B JTA Tx Power mW=N*6.4997-98.0863 [mW]
5C Structure Temp. 1 T=-N*0.388375+81.883 [C]
5D Structure Temp. 2 T=-N*0.388375+81.883 [C]
6A Structure Temp. 3 T=-N*0.388375+81.883 [C]
6B Structure Temp. 4 T=-N*0.388375+81.883 [C]
6C Battery Cell Temp. T=-N*0.388375+81.883 [C]
Spin Period:
bit
2C 0 ----
1 ----
2 8192 [msec]
3 4096 [msec]
4 2048 [msec]
5 1024 [msec]
6 512 [msec]
7 256 [msec]
2D 0 128 [msec]
1 64 [msec]
2 32 [msec]
3 16 [msec]
4 8 [msec]
5 4 [msec]
6 2 [msec]
7 1 [msec]
Example:
HI HI A6 07 81 77 00 9C FD CD 0C 42 79 5D 7B 47 91 8E 9C 69 C5 C3 C4 C4 BF
A6(hexadecimal) is 10100110(binary),so 1A(format) is
bit data
1A 0 A6 0 Main Relay ON
1 1 DCM ON
2 1 SRAM ON
3 0 Packet OFF
4 0 Packet OFF
5 1 JTA ON
6 0 JTD OFF
7 1 GAS ON
07(hexadecimal) is 00000111(binary),so 1B(format) is
bit data
1B 0 07 1 SAS ON
1 1 UVC ON
2 1 UVC Level 2
3 0 PCU Mode AUTO
4 0 PCU Level 1
5 0 PCU Level 1
6 0 Battery Mode FULL
7 0 Battery Logic FULL
7B(hexadecimal) is 123(decimal),so 4A(format) is
Solar Current 123*9.804 = 1206[mA]
91(hexadecimal) is 145(decimal),so 4C(format) is
Battery Voltage 145*0.10761 = 15.6[V]
The formula to derive the "Sun Angle" is as follows.
You must subtract 10 deg from the following 'deg' because of
the Sun Senser of satellite is inclined at an angle of 10 degrees.
'Code' is shown 7 bits and the highest left 1 bit in 8 bits means
a flag such as a renewal data is 1 or a changeless data is 0.
Example : HI HI A6 07 81 77 00 9C FD CD 0C 42 79 .....
^^
42(hexadecimal) is 01000010(binary),
so 'Code' is 1000010 and 'deg' is 150.5
therfore 150.5 - 10 = 140.5 degree actually.
Code deg : Code deg : Code deg : Code deg
0000001 27.5 : 0110001 59.5 : 1100001 91.5 : 1010001 123.5
0000011 28.5 : 0110011 60.5 : 1100011 92.5 : 1010011 124.5
0000010 29.5 : 0110010 61.5 : 1100010 93.5 : 1010010 125.5
0000110 30.5 : 0110110 62.5 : 1100110 94.5 : 1010110 126.5
0000111 31.5 : 0110111 63.5 : 1100111 95.5 : 1010111 127.5
0000101 32.5 : 0110101 64.5 : 1100101 96.5 : 1010101 128.5
0000100 33.5 : 0110100 65.5 : 1100100 97.5 : 1010100 129.5
0001100 34.5 : 0111100 66.5 : 1101100 98.5 : 1011100 130.5
0001101 35.5 : 0111101 67.5 : 1101101 99.5 : 1011101 131.5
0001111 36.5 : 0111111 68.5 : 1101111 100.5 : 1011111 132.5
0001110 37.5 : 0111110 69.5 : 1101110 101.5 : 1011110 133.5
0001010 38.5 : 0111010 70.5 : 1101010 102.5 : 1011010 134.5
0001011 39.5 : 0111011 71.5 : 1101011 103.5 : 1011011 135.5
0001001 40.5 : 0111001 72.5 : 1101001 104.5 : 1011001 136.5
0001000 41.5 : 0111000 73.5 : 1101000 105.5 : 1011000 137.5
0011000 42.5 : 0101000 74.5 : 1111000 106.5 : 1001000 138.5
0011001 43.5 : 0101001 75.5 : 1111001 107.5 : 1001001 139.5
0011011 44.5 : 0101011 76.5 : 1111011 108.5 : 1001011 140.5
0011010 45.5 : 0101010 77.5 : 1111010 109.5 : 1001010 141.5
0011110 46.5 : 0101110 78.5 : 1111110 110.5 : 1001110 142.5
0011111 47.5 : 0101111 79.5 : 1111111 111.5 : 1001111 143.5
0011101 48.5 : 0101101 80.5 : 1111101 112.5 : 1001101 144.5
0011100 49.5 : 0101100 81.5 : 1111100 113.5 : 1001100 145.5
0010100 50.5 : 0100100 82.5 : 1110100 114.5 : 1000100 146.5
0010101 51.5 : 0100101 83.5 : 1110101 115.5 : 1000101 147.5
0010111 52.5 : 0100111 84.5 : 1110111 116.5 : 1000111 148.5
0010110 53.5 : 0100110 85.5 : 1110110 117.5 : 1000110 149.5
0010010 54.5 : 0100010 86.5 : 1110010 118.5 : 1000010 150.5
0010011 55.5 : 0100011 87.5 : 1110011 119.5 : 1000011 151.5
0010001 56.5 : 0100001 88.5 : 1110001 120.5 : 1000001 152.5
0010000 57.5 : 0100000 89.5 : 1110000 121.5 : 1000000 153.5
0110000 58.5 : 1100000 90.5 : 101000 122.5 : --- ---
The formula to derive the "Attitude status" is unknown.
Example : HI HI A6 07 81 77 00 9C FD CD 0C 42 79 .....
^^
0C(hexadecimal) is 00001100(binary),
so 00001100 seems :
0 MTQ-X
0 MTQ-X
0 MTQ-X MBC CONT
0 MTQ-X (+)
1 MTQ-Y SPIN NULL
1 MTQ-Y SPIN
0 MTQ-Y
0 MTQ-Y
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