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XW-4

CAS-10

Amateur Radio Satellite User's Manual

 

 

 

 

                                          

30

  / 

31

                      

V2.0 by BA1DU 

龚万骢

 

 

Sending 

order 

Starting 

position 

Data 

length 

Telemetry data function description 

Telemetry data parsing algorithm 

F3W13 

1Byte 

X-band transceiver SPI interface status 

b7~b4: 

X-band transceiver baseband execution counter 0 

15 

b3b2: 

X-band transceiver SPI interface empty flag 01: valid; 10: invalid 

b1: 

X-band transceiver SPI-MISO data with or without monitoring 1: 

with data; 0: without data 

b0: 

X-band transceiver SPI-MOSI data with or without monitoring 1: 

with data; 0: without data

 

 

Summary of Contents for XW-4

Page 1: ...Alan Kung BA1DU 2023 2 17 XW 4 CAS 10 Amateur Radio Satellite User s Manual Ver 2 0...

Page 2: ...March 7 Y6 launch vehicle from the Wenchang Launch Center in Hainan China It is currently planned that the XW 4 CAS 10 satellite will be separated from the Chinese space station and enter operational...

Page 3: ...o amateur radio enthusiasts all over the world When the relevant remote control command is received by the satellite the GMSK telemetry channel will be used to downlink the photo storage information a...

Page 4: ...con Frequency 435 575MHz RF power 20dBm CW rate 22wpm GMSK telemetry Frequency 435 725MHz RF power 23dBm Data rate 4800bps V U mode linear transponder Uplink frequency 145 870MHz Downlink frequency 43...

Page 5: ...order Sending content Description Remarks 1 CAS10 Satellite ID Send in standard Morse code 2 DFH Telemetry information start identifier 3 DFH Telemetry information start identifier 4 CH1 CH30 Telemet...

Page 6: ...XW 4 CAS 10 Amateur Radio Satellite User s Manual 5 31 V2 0 by BA1DU The telemetry data CH1 to CH30 are coded as follows Digital Code Table Digital Code 0 T 1 A 2 U 3 V 4 4 5 E 6 6 7 B 8 D 9 N...

Page 7: ...ented by 1 and start counting from 000 when it is full Time CH4 Device switch status state 000 711 XYZ X 0 Linear transponder is off In orbit mode test mode disabled 1 Linear transponder is on In orbi...

Page 8: ...00 999 V N 100 V CH11 VU 3 3V voltage 2 data 000 999 V N 100 V CH12 VU 3 8V current data 000 999 I N mA CH13 Transmitter 3 8V current data 000 999 I N mA CH14 Receiver 3 8V current data 000 999 I N mA...

Page 9: ...0 025 25 125 125 301 1 311 11 391 91 421 121 CH23 Reserved data 000 999 CH24 Reserved data 000 999 CH25 Satellite primary bus voltage data 000 999 V N 10 V CH26 Satellite load total current data 000...

Page 10: ...te W0 W6 0x0100010001007E W7 W125 2 GMSK telemetry data format and analysis method Sending order Starting position Data length Telemetry data function description Telemetry data parsing algorithm 1 W7...

Page 11: ...yte Remote control frame reception counter W1 is an integer Restart counting from 0 after counting up Range 0 255 6 W22 1Byte Remote control command execution counter W1 is an integer Restart counting...

Page 12: ...b4 Test mode enable 0 disable 1 enable b3 0 Linear transponder off 1 Linear transponder on b2 OBDH time calibration enable 0 disable 1 enable b1 Telemetry transmit RF power 0 low power 1 high power b0...

Page 13: ...ange 0 15 0 V 17 W34 2Byte VU 12V power supply current W1W2 is an integer Range 0 1500 mA 18 W36 2Byte VU 5V power supply voltage W1 is the integer part W2 is the decimal part 2 decimal places Range 0...

Page 14: ...e integer part W2 is the decimal part 1 decimal place Range 0 30 0 V 29 W58 2Byte Reserved W1 is the integer part W2 is the decimal part 1 decimal place Range 0 30 0 V 30 W60 1Byte UHF Transmitter PA...

Page 15: ...W1 Year 0 99 representing 2000 2099 W2 Month 01 12 representing January to December W3 Day 01 31 representing 1st 31st W4 Hour 00 23 representing 0 00 23 00 W5 minute 00 59 representing 0 minute 59 m...

Page 16: ...e The four bytes are the accumulated value of the whole second of UTC since 0 00 00 00 UTC on January 1 2009 0 00 after the jumped second W2 second high byte W3 second low byte W4 second lowest byte 4...

Page 17: ...ting mode and b3 b0 correspond to the sub mode 0x00 Active segment mode 0x11 Full attitude capture mode Rate damping 0x12 Full attitude capture mode Sun search 0x13 Full attitude capture mode Orientat...

Page 18: ...acter bit 0 is positive 1 is negative b6 b0 are numeric bits Range N 2 90 90 57 W115 1Byte Rolling angle estimation B7 of W1 is a character bit 0 is positive 1 is negative b6 b0 are numeric bits Range...

Page 19: ...te control channel status self check 1 valid 0 invalid b1b0 X band transceiver remote control code group status 01 Code group 1 10 Code group 2 62 W121 2Byte X band transceiver AGC voltage W1 is the i...

Page 20: ...select the photos to download 1 Photo catalog information XW 4 CAS 10 satellite photo catalog information is stored in the flash memory on the satellite in the following format Function code Photo cat...

Page 21: ...the ground station the transmission of telemetry data stops immediately and instead sends the photo data required to be downloaded in the remote control command Each frame of photo data is 256 bytes a...

Page 22: ...0 Download photo catalog information 2 01 Download photo 01 3 02 Download photo 02 4 03 Download photo 03 5 04 Download photo 04 6 05 Download photo 05 7 06 Download photo 06 8 07 Download photo 07 9...

Page 23: ...ed when the satellite passes over China In the test mode the telemetry data is sent using AX 25 UI frames with 128 bytes of valid data per frame including frame synchronization code 2 bytes satellite...

Page 24: ...3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 127 Frame F0 EB 90 Sat time seconds Millisec M FE Frame F1 EB 90 M 1 FF Frame F2 EB 90 M 2 00 Frame F3 EB 90 M 4 02 Instruction Frame synchron ization code Satell...

Page 25: ...ounting from 0 after counting up Range 0 255 4 F0W5 1Byte Remote control command forwarding counter W1 is an integer Restart counting from 0 after counting up Range 0 255 5 F0W6 1Byte Working status 1...

Page 26: ...our bytes are the accumulated value of the whole second of UTC since 0 00 00 00 UTC on January 1 2009 0 00 after the jumped second W2 second high byte W3 second low byte W4 second lowest byte 8 F0 W12...

Page 27: ...3 1Byte Solar array voltage Y 0 0873 X 0 9338 F2 frame frame count is 4n 2 Sending order Starting position Data length Telemetry data function description Telemetry data parsing algorithm 1 F2W2W3 2By...

Page 28: ...uver mode 0x23 Attitude maneuver mode Switch to cruise to the sun 0x24 Attitude maneuver mode Switch to normal operation 0x25 Attitude maneuver mode Switch to offset flight 0x26 Attitude maneuver mode...

Page 29: ...te Pitch angle estimation B7 of W1 is a character bit 0 is positive 1 is negative b6 b0 are numeric bits Range 125 125 9 F2W13 1Byte Yaw angle estimation B7 of W1 is a character bit 0 is positive 1 is...

Page 30: ...r position synchronization lock indication 1 locked 0 lost lock b5 X band transceiver remote control carrier lock indication 1 locked 0 lost lock b4 X band transceiver remote control pseudo code lock...

Page 31: ...g algorithm 9 F3W13 1Byte X band transceiver SPI interface status b7 b4 X band transceiver baseband execution counter 0 15 b3b2 X band transceiver SPI interface empty flag 01 valid 10 invalid b1 X ban...

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