Jan 21, 2021, Daytime Operation Report

20210121_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: 4.178 [V], Angular velocity: 63.66 [deg./s]
2nd : CW:S9[dB], Bus Voltage: 4.178 [V], Angular velocity: 63.60 [deg./s]

1st:”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 : 103
VERTICAL POLARIZED WAVE : 0
radio interference : medium

2nd:”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:768, ESC:24, EP:1023)”
Number of received packets
HORIZONTALLY POLARIZED WAVE : 6
VERTICAL POLARIZED WAVE : 2
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:524, ESC:24, EP:767)”.
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)”.
5th : No operation.

2021/1/21      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    18:19:22 | 18:22:43 | 18:26:04
Azimuth      99.93  |   63.72   |  27.50
Elevation      0.02   |    4.54   |   -0.01
------------------------------------------------------------------------------------------
Time(JST)    19:49:49 | 19:55:35 | 20:01:20
Azimuth      167.59  |   263.07   |  348.84
Elevation      0.02   |    88.80   |   -0.01
------------------------------------------------------------------------------------------
Time(JST)    21:26:38 | 21:29:36 | 21:32:35
Azimuth      239.94  |   271.55   |  303.33
Elevation      0.01   |    3.18   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 21020.39890801 .00001315 00000-0 54941-4 0 9999
2 43937 97.1986 69.3944 0023804 173.2518 186.9046 15.25101376111690

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