August 31, 2020, Nighttime Operation Report

2020_08_31_5th.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: 4.084 [V], Angular velocity: 40.85 [deg./s]
5th : CW:S9[dB], Bus Voltage: 4.079 [V], Angular velocity: 42.03 [deg./s]

4th:”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)(Size:2096896 SC_S:28, SSC:34, SP767, ESC:34, EP:1023)".
Number of received packets
HORIZONTALLY POLARIZED WAVE : 2215
VERTICAL POLARIZED WAVE : 2450
radio interference : weak

5th:”Video data downlink (FSK transmitter,GMSK19k2,435.900MHz)(Size:2096896 SC_S:28, SSC:35, SP0, ESC:35, EP:255)".
Number of received packets
HORIZONTALLY POLARIZED WAVE : 1223
VERTICAL POLARIZED WAVE : 1017
radio interference : weak

○Next Operation Schedule
1st : "CW custom operation(437.075MHz)", "Image data downlink(FSK transmitter,GMSK19k2,435.900MHz)(Size:2096896 SC_S:28, SSC:35, SP256, ESC:35, EP:511)".
2nd : "CW custom operation(437.075MHz)", "Image data downlink(FSK transmitter,GMSK19k2,435.900MHz)(Size:2096896 SC_S:28, SSC:35, SP512, ESC:35, EP:767)".
3rd : No operation.

2020/9/1      AOS     |       PE      |      LOS
------------------------------------------------------------------------------------------
Time(JST)    7:26:53 | 7:31:02 | 7:35:09
Azimuth      44.11  |   90.28   |  136.36
Elevation      0.00   |    7.40   |   -0.01
------------------------------------------------------------------------------------------
Time(JST)    8:59:10 | 9:04:56 | 9:10:39
Azimuth      5.55  |   284.23   |  202.14
Elevation      0.01   |    54.11   |   -0.03
------------------------------------------------------------------------------------------
Time(JST)    10:35:35 | 10:37:36 | 10:39:39
Azimuth      319.81  |   298.99   |  277.96
Elevation      0.01   |    1.43   |   -0.01
------------------------------------------------------------------------------------------

○Latest TLE
1 43937U 19003F 20243.59892831 .00001177 00000-0 50332-4 0 9998
2 43937 97.2203 291.9292 0022829 326.0788 33.8989 15.24540568 89931

この記事へのコメント