Jan 21, 2020, Nighttime Operation Report

2021_01_21_3rd.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)",”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
3rd : CW:S9[dB], Bus Voltage: 4.110 [V], Angular velocity: 64.47 [deg./s]
4th : CW:S9[dB], Bus Voltage: 4.105 [V], Angular velocity: 64.55 [deg./s]

3rd:”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 : weak

4th:”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 : 1801
VERTICAL POLARIZED WAVE : 0
radio interference : weak

○Next Operation Schedule
1st : "CW custom operation(437.075MHz)", ”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:764, ESC:24, EP:767)”.
2nd : "CW custom operation(437.075MHz)", ”Video data downlink(QPSK transmitter, π/4 shift QPSK38k4, 435.900MHz)(Size:5987328 SC_S:22, SSC:24, SP:768, ESC:24, EP:1023)”.

2021/1/22      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    7:21:28 | 7:25:42 | 7:29:55
Azimuth      41.66  |   91.36   |  141.28
Elevation      0.02   |    8.68   |   -0.02
------------------------------------------------------------------------------------------
Time(JST)    8:53:59 | 8:59:28 | 9:04:54
Azimuth      3.00  |   285.40   |  207.34
Elevation      0.00   |    40.80   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 21020.85819068 .00001541 00000-0 63887-4 0 9996
2 43937 97.1985 69.8361 0023847 171.6467 188.5174 15.25104034111761

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