Feb 20, 2021, Daytime Operation Report

20210220_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 once.
"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 : No operation.
2nd : CW:S9[dB], Bus Voltage: 4.140 [V], Angular velocity: 72.76 [deg./s]

2nd:”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5819392 SC_S:32, SSC:35, SP:52, ESC:35, EP:1023)”
Number of received packets
HORIZONTALLY POLARIZED WAVE : 3019
VERTICAL POLARIZED WAVE : 718
radio interference : strong

○Next Operation Schedule
3rd : "CW custom operation(437.075MHz)", ”Linear transponder operation (Up : 145.930~145.900MHz, Down : 435.880~435.910MHz)”.
4th : "CW custom operation(437.075MHz)", ”Linear transponder operation (Up : 145.930~145.900MHz, Down : 435.880~435.910MHz)”.

2021/2/20      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    19:26:26 | 19:31:55 | 19:37:24
Azimuth      153.99  |   74.87   |  356.35
Elevation      0.01   |    43.58   |   -0.03
------------------------------------------------------------------------------------------
Time(JST)    21:01:33 | 21:05:40 | 21:09:49
Azimuth      220.27  |   268.52   |  317.02
Elevation      0.02   |    8.10   |   0.00
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 21050.77607108 .00001417 00000-0 58715-4 0 9996
2 43937 97.1941 98.6023 0025151 71.4295 288.9673 15.25206792116324

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