Feb 25, 2021, Daytime Operation Report

20210225_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)","RSSI 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: 4.162 [V], Angular velocity: 75.97 [deg./s]
2nd : CW:S9[dB], Bus Voltage: 4.178 [V], Angular velocity: 75.86 [deg./s]
3rd : No operation.

1st:"RSSI data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)"
Number of received packets
HORIZONTALLY POLARIZED WAVE : 56
VERTICAL POLARIZED WAVE : 1552
radio interference : strong

○Next Operation Schedule
4th : "CW custom operation(437.075MHz)", "RSSI data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)".
5th : "CW custom operation(437.075MHz)".

2021/2/25      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    19:06:58 | 19:12:08 | 19:17:19
Azimuth      140.87  |   72.18   |  3.56
Elevation      0.03   |    23.74   |   -0.01
------------------------------------------------------------------------------------------
Time(JST)    20:40:49 | 20:45:40 | 20:50:33
Azimuth      204.45  |   265.89   |  327.39
Elevation      0.03   |    15.29   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 21055.43412742 .00002646 00000-0 10718-3 0 9997
2 43937 97.1935 103.0804 0024896 56.0626 304.2974 15.25235851117030

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