December 01, 2020, Nighttime Operation Report

2020_12_01_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 (FSK transmitter,GMSK4k8,435.900MHz)”.

・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: 4.111 [V], Angular velocity: 8.232 [deg./s]
4th : CW:S9[dB], Bus Voltage: 4.104 [V], Angular velocity: 8.084 [deg./s]

3rd:”Video data downlink (FSK transmitter,GMSK4k8,435.900MHz)(Size:5987328 SC_S:22, SSC:32, SP:256, ESC:32, EP:511)"
Number of received packets
HORIZONTALLY POLARIZED WAVE : 545
VERTICAL POLARIZED WAVE : 3
radio interference : weak

4th:”Video data downlink (FSK transmitter,GMSK4k8,435.900MHz)(Size:5987328 SC_S:22, SSC:31, SP:768, ESC:31, EP:1023)"
HORIZONTALLY POLARIZED WAVE : 1129
VERTICAL POLARIZED WAVE : 983
radio interference : weak

○Next Operation Schedule
1st : "CW custom operation(437.075MHz)", "Image data downlink(FSK transmitter,GMSK4k8,435.900MHz)(Size:5987328 SC_S:22, SSC:32, SP:324, ESC:32, EP:511)".
2nd : "CW custom operation(437.075MHz)", "Image data downlink(FSK transmitter,GMSK4k8,435.900MHz)(Size:5987328 SC_S:22, SSC:32, SP:512, ESC:32, EP:767)".

2020/12/2      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    7:44:27 | 7:49:36 | 7:54:44
Azimuth      30.91  |   94.46   |  157.82
Elevation      0.03   |    17.26   |   -0.03
------------------------------------------------------------------------------------------
Time(JST)    9:17:46 | 9:23:07 | 9:28:29
Azimuth      356.33  |   287.96   |  219.51
Elevation      0.01   |    24.05   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 20335.61218794 .00004156 00000-0 16870-3 0 9991
2 43937 97.2054 20.5391 0023638 1.4433 358.6869 15.24875730103957

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