September 30, 2020, Nighttime Operation Report

20200930_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)",”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)”.

・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 : No operation.
4th : CW:S9[dB], Bus Voltage: 4.100 [V], Angular velocity: 53.02 [deg./s]
5th : CW:S9[dB], Bus Voltage: 4.088 [V], Angular velocity: 53.06 [deg./s]

4th:”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)(Size:2924032 SC_S:40, SSC:43, SP:256, ESC:43, EP:511)".
Number of received packets
HORIZONTALLY POLARIZED WAVE : 2521
VERTICAL POLARIZED WAVE : 2157
radio interference : medium

5th:”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)(Size:2924032 SC_S:40, SSC:43, SP:512, ESC:43, EP:767)".
Number of received packets
HORIZONTALLY POLARIZED WAVE : 817
VERTICAL POLARIZED WAVE : 450
radio interference : strong

○Next Operation Schedule
1st : "CW custom operation(437.075MHz)", ”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)(Size:2924032 SC_S:40, SSC:43, SP:660, ESC:43, EP:755)".
2nd : "CW custom operation(437.075MHz)", ”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)(Size:2924032 SC_S:40, SSC:43, SP:768, ESC:43, EP:1023)".
3rd : No operation.

2020/10/1      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    7:20:00 | 7:23:39 | 7:27:16
Azimuth      48.60  |   89.28   |  130.10
Elevation      0.02   |    5.45   |   0.00
------------------------------------------------------------------------------------------
Time(JST)    8:51:57 | 8:57:37 | 9:03:11
Azimuth      7.13  |   283.41   |  199.25
Elevation      0.03   |    62.77   |   -0.01
------------------------------------------------------------------------------------------
Time(JST)    10:28:04 | 10:30:20 | 10:32:37
Azimuth      322.54  |   298.48   |  274.23
Elevation      0.01   |    1.89   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 20273.85636415 .00002535 00000-0 10486-3 0 9998
2 43937 97.2161 321.0857 0022955 211.7318 148.2538 15.24617655 94541

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