SOHLA

SOHLA-1 Earth picture success

Under control support by JAXA with S-band.
Amateur band employment will be a schedule in March 2009.

Imagination figure

(C)Osaka Prefecture University, Small Spacecraft Systems Reserch Center
http://www.sssrc.aero.osakafu-u.ac.jp/HP_M/ (Japanese)

Contents:
Earth picture
What's SOHLA-1 ?
Begins operations
Normal operations
SOHLA-1 telemetry data
SOHLA-1 telemetry analysis
SOHLA-1 FSS Hi-mode analysis
How to measure the spin rate of SOHLA-1

SOHLA-1 Earth picture success 12Feb2009

Grand Station succeeded in the real photography of Earth picture by S-band.
http://www.sssrc.aero.osakafu-u.ac.jp/HP_M/html/diary.html (Japanese)

Photographed 02Feb2009 over Japan

This above picture is directly linked into 'Osaka Prefecture University' from here.
(C)Osaka Prefecture University, Small Spacecraft Systems Reserch Center
http://www.sssrc.aero.osakafu-u.ac.jp/HP_M/ (Japanese)

The control station is now using 'OBJECT E' as an orbital element of
SOHLA-1. And this was photographed by a CMOS camera.

According to the control station, an amateur band antenna is spread
at 04:10UTC on 24 Feb 2009. And the radio transceiver (HTRX) comfirmed
to ON of supply. The use of the amateur band starts an operative
examination after 16 March and it is going to begin an experiment.
In addition, it is to have succeeded in the function confirmation of
the thunder sensor and the laser reflection experiment.

What's SOHLA-1 ?
Development
SOHLA-1 is the 50kg grade Space Technology Demonstration small spin satellite
that the development by Higashiosaka space development cooperation 'SOHLA' is
pushed forward as a product government college cooperation project of New Energy
and Industrial Technology Development Organization 'NEDO'.
SOHLA, Osaka Prefecture University, Ryukoku University and Osaka University
are engaged in this SOHLA-1 development with technological assistance of
Japan Aerospace Exploration Agency 'JAXA' jointly.

The name called 'the MAIDO-1 satellite' is acquired formally after having lifted off
for the space. ('MAIDO' is a Japanese Language that means 'Always thank you'.)

Mission
We aim to develop a small spin satellite for Space Technology Demonstration
with low cost in a short term. It's a main mission that SOHLA and a university
learn a series of work to affect satellite development by the process.
In the following, we show it about an experiment (mission) that SOHLA-1 performs in orbit.

Precedent experiment of the thunder observation:

We grasp the function inspection in the outer space of the measurement machinery
which aimed at the monitoring of the thunder activity from the satellite and the
received VHF electromagnetic wave characteristic. (The development by Osaka University)

Bus technology experiment of the 50kg grade smallsat:

Five following experiment machinery are equipped with as a bus technology experiment.

(1) Development boom movement experiment machinery (The development by Ryukoku University)
(2) Sun sensor movement experiment machinery (The development by Osaka Prefecture University)
(3) Small monitor camera movement experiment machinery
(4) Orbit decision technology experiment machinery
(5) Space environment measurement experiment machinery

Space technology demonstration experiment of a part for space:

It's equipped with two following experiment machinery as technology demonstration of the parts.

(1) CIGS solar battery
(2) 200MIPS grade 64bitMPU experiment machinery

Main specifications

Development system

http://www.sssrc.aero.osakafu-u.ac.jp/SOHLA-1what.html (Japanese)

SOHLA-1 begins operations

SOHLA-1 examination use started on 17 March 2009. The reception report
was as a powerful signal in 18 March. The normal operation will start
from 25 March. The examination use schedule of then as follows.
The current amateur mode is only the broadcast of AFSK signal.

Information
437.505MHz
AFSK 1200bps
AX.25

OBJECT E
1 33496U 09002E 09077.41247038 .00000497 00000-0 92137-4 0 1659
2 33496 098.0280 188.1849 0006449 198.4659 161.6367 14.69427465 7946

Prediction(UTC)
19 Mar 04:25
20 Mar 15:53
21 Mar 03:49, 14:46
22 Mar 15:16
23 Mar 03:13, 04:50
24 Mar 03:43, 05:22

SOHLA-1 first decoded

from JL3YUS to JL3YUK: We want you to feel closer to space&realize the borderless world.
from JL3YUS to JL3YUK: There is a destiny that makes us brothers. / Come Fly with me.
from JL3YUS to JL3YUK: Hello! This is the FSS built by OSAKA PREFECTURE UNIVERSITY.
from JL3YUS to JL3YUK: This is a message from space. We got it! But it's the first step.
from JL3YUS to JL3YUK: We want you to feel closer to space&realize the borderless world.
from JL3YUS to JL3YUK: There is a destiny that makes us brothers. / Come Fly with me.
from JL3YUS to JL3YUK: This is a message from space. We got it! But it's the first step.
from JL3YUS to JL3YUK: There is a destiny that makes us brothers. / Come Fly with me.
from JL3YUS to JL3YUK: This is a message from space. We got it! But it's the first step.
from JL3YUS to JL3YUK: Hello! This is the FSS built by OSAKA PREFECTURE UNIVERSITY.

090321_2343.asc 21 Mar 14:46-14:59UTC, Ascii
090321_2343.bin 21 Mar 14:46-14:59UTC, Binary

Original Messages

[2009/03/23 00:27:52R] JL3YUS>JL3YUK <UI>: We want you to feel closer to space&realize the borderless world.
[2009/03/23 00:27:53R] JL3YUS>JL3YUK <UI>: There is a destiny that makes us brothers. / Come Fly with me.
[2009/03/23 00:28:00R] JL3YUS>JL3YUK <UI>: We want you to feel closer to space&realize the borderless world.
[2009/03/23 00:28:01R] JL3YUS>JL3YUK <UI>: There is a destiny that makes us brothers. / Come Fly with me.
[2009/03/23 00:28:02R] JL3YUS>JL3YUK <UI>: Hello! This is the FSS built by OSAKA PREFECTURE UNIVERSITY.
[2009/03/23 00:28:03R] JL3YUS>JL3YUK <UI>: This is a message from space. We got it! But it's the first step.
[2009/03/23 00:28:04R] JL3YUS>JL3YUK <UI>: We want you to feel closer to space&realize the borderless world.
[2009/03/23 00:28:05R] JL3YUS>JL3YUK <UI>: There is a destiny that makes us brothers. / Come Fly with me.

090323_0014.asc 22 Mar 15:16-15:29UTC, Ascii
090323_0014.bin 22 Mar 15:16-15:29UTC, Binary

SOHLA-1 Normal Operations

On 24 Mar 2009, SOHLA-1 began the normal operations after having passed
a completion inspection of amateur radio band.

JL3YUS
437.505MHz
AFSK 1200bps
AX.25 protocol

UTC
2009/3/24(Tue) 03:43, 05:21
2009/3/25(Wed) 04:14
2009/3/26(Thu) 03:07
2009/3/27(Fri) 03:38, 14:35
2009/3/28(Sat) 04:08, 15:05
2009/3/29(Sun) 04:39, 14:00

Re: SOHLA-1 not heard

Ground Station of SOHLA-1 says:
About HTX_ON except over Japan, it is not made disappointing because we
do not perform the international adjustment of the satellite frequency.
We aim now at launching of 2013 in Osaka Prefecture University and
perform the conceptual design of a new satellite.

About this new satellite, we performed the international adjustment of
the frequency and gave design plan to be able to always send a signal
all over the world. We really are sorry for the world satellitors who
expected it in SOHLA-1.

We thank for the reception cooperation of the satellitors very much.
Because we try control hard, thanks in advance for your help.

> JE9PEL, Mineo Wakita said to the other satellitor:
> SOHLA-1 is now only transmitting a signal over Japan.
> Ground Station is now examining whether the transmission
> of a signal is possible all over the world.

SOHLA-1 telemetry data
http://www.ne.jp/asahi/hamradio/je9pel/sohlatlm.htm (English by JE9PEL)
http://www.sssrc.aero.osakafu-u.ac.jp/HP_M/html/data.html (Japanese by GS)

SOHLA-1 telemetry analysis
http://www.ne.jp/asahi/hamradio/je9pel/sohlanal.htm (English by JE9PEL)

SOHLA-1 FSS Hi-mode asalysis
http://www.ne.jp/asahi/hamradio/je9pel/sohlahim.htm (English by JE9PEL)
http://www.sssrc.aero.osakafu-u.ac.jp/HP_M/html/Himode.html (Japanese by GS)