Feb 25, 2021, Nighttime Operation Report

2021_02_25_4th.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 nighttime 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 nighttime 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
4th : CW:S9[dB], Bus Voltage: 4.094 [V], Angular velocity: 75.84 [deg./s]
5th : CW:S9[dB], Bus Voltage: 4.094 [V], Angular velocity: 75.76 [deg./s]

4th:"RSSI data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)"
Number of received packets
HORIZONTALLY POLARIZED WAVE : 4080
VERTICAL POLARIZED WAVE : 432
radio interference : weak

○Next Operation Schedule
1st : "CW custom operation(437.075MHz)", "RSSI data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)".
2nd : "CW custom operation(437.075MHz)".

2021/2/26      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    8:10:11 | 8:15:48 | 8:21:26
Azimuth      17.58  |   99.29   |  181.00
Elevation      0.03   |    47.89   |   -0.01
------------------------------------------------------------------------------------------
Time(JST)    9:44:42 | 9:48:53 | 9:53:06
Azimuth      341.56  |   293.34   |  244.84
Elevation      0.02   |    8.75   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 21055.56533895 .00002725 00000-0 11028-3 0 9997
2 43937 97.1933 103.2065 0024881 55.6090 304.7496 15.25236957117057

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