Jan 20, 2021, Daytime Operation Report

20210120_1st.JPG
Hello, everyone. We are NEXUS development project team in Nihon University. Your receiving reports are used for confirmation of NEXUS state. Thank you for your cooperation. We will report the result of daytime operation today.

CW custom mode
NEXUS are orbiting at CW custom mode now. CW format is following.
JS1YAVNEXUS04 (Sattime : 8words) (SW info : 2words) (Reset info : 10words) (Bat Vol : 4words) (Gyro x : 4words) (Gyro y : 4words) (Gyro z : 4words)
Total : 49words (characters)

○Operation Result
We performed daytime operations twice.
"CW custom operation(437.075MHz)",”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)”.

・CW Operation
For CW telemetry format, please have a look at the pdf below.
http://sat.aero.cst.nihon-u.ac.jp/nexus/download/NEXUS_CW_telemetry_format_e.pdf
1st : CW:S9[dB], Bus Voltage: 4.199 [V], Angular velocity: 59.84 [deg./s]
2nd : CW:S9[dB], Bus Voltage: 4.179 [V], Angular velocity: 60.17 [deg./s]

1st:”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:24, ESC:24, EP:151)”
Number of received packets
HORIZONTALLY POLARIZED WAVE : 34
VERTICAL POLARIZED WAVE : 0
radio interference : strong

2nd:”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:524, ESC:24, EP:767)”
Number of received packets
HORIZONTALLY POLARIZED WAVE : 0
VERTICAL POLARIZED WAVE : 0
radio interference : strong

○Next Operation Schedule
3rd : "CW custom operation(437.075MHz)", ”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:24, ESC:24, EP:151)”.
4th : "CW custom operation(437.075MHz)", ”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:524, ESC:24, EP:767)”.

2021/1/20      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    18:40:30 | 18:45:00 | 18:49:30
Azimuth      119.45  |   67.37   |  15.42
Elevation      0.00   |    10.60   |   -0.02
------------------------------------------------------------------------------------------
Time(JST)    20:12:30 | 20:18:09 | 20:23:49
Azimuth      182.11  |   261.26   |  340.77
Elevation      0.02   |    41.15   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 21019.74278843 .00001314 00000-0 54897-4 0 9991
2 43937 97.1986 68.7634 0023733 175.5398 184.6057 15.25099577111596

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