ANDE-2 and DRAGONSat
ANDE-2 and DRAGONSat deployed from STS-127 on 31 Jul 2009
ANDE-2, DRAGONSat #1
ANDE-2
Atmospheric Neutral Density Experiment
ANDE-2 (Atmospheric Neutral Density Experiment - 2) consists of two microsatellites,
called ANDE Active (AA) spacecraft (Castor) and the ANDE Passive (AP) spacecraft (Pollux)
launched from the Shuttle payload bay, that will measure the density and composition of
the low Earth orbit (LEO) atmosphere while being tracked from the ground.
The data will be used to better predict the movement and decay of objects in orbit.
http://www.nasa.gov/mission_pages/station/science/experiments/ANDE-2.html
DRAGONSat
Dual RF Astrodynamic GPS Orbital Navigator Satellite
BEVO-1 (DRAGONSAT-1)
Nation: USA
Type / Application: Technology
Operator: University of Texas at Austin
Contractors: University of Texas at Austin
Equipment: DRAGON GPS Receiver
Configuration: 5" cube
Propulsion: none
Lifetime: 3.5 kg
Mass: 5 kg
AggieSat-2 (DRAGONSAT-2)
Nation: USA
Type / Application: Technology
Operator: Texas A&M University
Contractors: Texas A&M University
Equipment: DRAGON GPS Receiver
Configuration: 5" cube
Propulsion: None
Lifetime:
Mass: 3.5 kg
ANDE-2 = Castor + Pollux
DRAGONSat = BEVO-1 + AggieSat-2
ANDE-2, DRAGONSat #2
ANDE-2 AA Castor, 145.825MHz 1200bps AX.25 every 30 seconds
ANDE-2 AP Pollux, 145.825MHz 1200bps AX.25 every 33 seconds
Bob, WB4APR wrote:
The two ANDE satellites (Castor and Pollux) will be deployed
from the Space Shuttle now that it has separated from the ISS.
Both satellites will be transmitting on 145.825 MHz. Castor will
transmit telemetry every 30 seconds. Pollux every 33 seconds.
Both are transmitting 1200 baud AX.25 packet Telemetry.
Most of the info is on the website:
https://goby.nrl.navy.mil/ANDE
Other than that, I don't have much detail information since this
was built by a different team than our original ANDE project.
The amateur payloads were developed by the Amateur Radio Club at
the Naval Research Labs and got a ride on the ANDE spheres like
we did a few years ago.
ANDE-2, DRAGONSat #3
SB SAT @ AMSAT $ANS-207.05
STS-127 To Deploy Dual Picosats on July 30
AMSAT News Service Bulletin 207.05
>From AMSAT HQ SILVER SPRING, MD.
July 26, 2009
To All RADIO AMATEURS
BID: $ANS-207.05
BEVO-1 Downlink Information:
Beacon Mode
Downlink Freq: 437.325 MHz
Modulation: FM, 200mW, Morse Code, ~20 WPM
Data Mode
Downlink Freq: 437.325 MHz
Modulation:
GMSK, 1W, 9600 baud, AX.25 (default)
FM, 1W, Bell 202, AX.25
http://www.utexas.edu/news/2009/06/09/picosatellite/
AggieSat-2
http://aggiesat.org/Home
436.250MHz
ANDE-2, DRAGONSat #4
Deployed successfully from STS-127 on 31 Jul 2009
STS-127
1 35633U 09038A 09211.85366475 .00110207 00000-0 59356-3 0 507
2 35633 51.6376 82.6027 0005855 37.7668 18.1621 15.79334194 2361
DRAGONSAT
1 35690U 09038B 09211.78040654 .00052238 00000-0 27158-3 0 10
2 35690 051.6362 082.9800 0005074 086.7019 273.4578 15.80416454 40
Ivan wrote,
ANDE -3h deploy elements
------------------------------------------------------------------------
1 99999U 09211.72373843 -.02622722 00000-0 -14293-1 0 00003
2 99999 051.6372 083.2754 0005819 029.8235 006.8153 15.79273176000058
------------------------------------------------------------------------
1 99999U 09211.72373843 .00571633 00000-0 30100-2 0 00009
2 99999 051.6372 083.2754 0003023 027.2381 009.4075 15.79914706000027
------------------------------------------------------------------------
1 99999U 09211.72373843 .00636106 00000-0 34351-2 0 00008
2 99999 051.6372 083.2754 0005463 031.4523 005.1966 15.79342597000027
------------------------------------------------------------------------
1 99999U 09211.72373843 .00545186 00000-0 29083-2 0 00001
2 99999 051.6372 083.2754 0004209 029.9409 006.7016 15.79624738000022
------------------------------------------------------------------------
1 99999U 09211.72373843 .00573006 00000-0 30024-2 0 00000
2 99999 051.6372 083.2754 0002560 025.5846 011.0602 15.80024865000024
------------------------------------------------------------------------
1 99999U 09211.72373843 .00564650 00000-0 29889-2 0 00002
2 99999 051.6372 083.2754 0003500 028.5748 008.0691 15.79797847000022
------------------------------------------------------------------------
PA3GUO wrote,
Think I did pick up Aggiesat:
Very pass, 1433 UTC (manual tuning):
http://www.pa3guo.com/aggiesat_30jul2009_1433utc_436.250cw.mp3
Next pass, 1600 UTC (manual tuning):
http://www.pa3guo.com/aggiesat_30jul2009_1600utc_436.255cw.mp3
Burst of 5 seconds, within a period of 20 second.
My estimate is that the center frequency is around 436.255 MHz
First signals heared 436.262, last signals 436.248.
Shuttle keps used.
ANDE-2
POLLUX-1/TELEM>CQ>UI,?,F0 (1199 baud):
MEMS 1188 -2.996 -1.09 -1.887 0.553 -0.227 3.889 -0.50 13.71 11.57 5.31 5.27
4.82 2.60 28 16 20
POLLUX-1/TELEM>CQ>UI,?,F0 (1199 baud):
MEMS 1254 2.59 2.58 2.44 -2.881 -0.993 -1.887 0.223 -0.01 4.338 -2.81 15.88
6.23 5.49 5.35 4.99 2.60 13 28 12
POLLUX-1>TELEM>CQ:MEMS 990 2.59 2.57 2.45 -3.112 -1.556 -2.118 0.226
-0.779 -2.559 -5.35 -27.74 17.44 4.86 4.73 4.40 2.60 7 49 10
POLLUX-1>TELEM>CQ:SYST 1023 0 0 33 0 002d 06e8 017f 06a8 0145 0670 ffff
09a0 0022 06c0 ffff ffff 0158 08cc 0fc4 0036
At 2041 Z copied Castor on 145.825:
KD4HBO-1>CQ,TELEM:,qAR,W7KKE-3:SYS 6420 65535 0 30 0 ffee 0730 ffd6 0398
ffe1 09b0 ffd3 0780 fe93 0810 ffdd 0958 13.7 5.0 9.9 .66 -1.40 1.32
0.14 -2.15 -2.15 45 3 14
!S 17:40:19 !POLLUX-1>TELEM>CQ:MEMS 990 2.59 2.57 2.45 -3.112 -1.556 -2.118
0.226 -0.779 -2.559 -5.35 -27.74 17.44
4.86 4.73 4.40 2.60 7 49 10
!S 17:40:46 !POLLUX-1>TELEM>CQ:SYST 1023 0 0 33 0 002d 06e8 017f 06a8 0145 0670
ffff 09a0 0022 06c0 ffff ffff 0158
08cc 0fc4 0036
Copied in EN91. Timestamps are EDT (UTC-4)
Fm POLLUX-1 To CQ Via TELEM [15:03:57]
MEMS 6006 2.59 2.57 2.46 0.778 1.440 0.331 -0.441 -0.882 1.441 -7.26
-1.13 24.26 6.90 7.24 6.72 2.60 16 45 31
Fm POLLUX-1 To CQ Via TELEM [15:04:23]
SYST 6039 0 0 33 0 0051 0a30 002d 0980 002d 0960 0168 0cc8 0008 09d0
ffff ffff 015e 08c6 0fbe 0040
Used UISS to decode, tracking ISS on 145.825 figuring it had to be close
enough (antenna has 24 degree beam width). Will add keps later on and
get more accurate tracking.
ANDE-2, DRAGONSat #5
Re: Please teach me AggieSat frequency and mode.
From: John Thomas Graves
To: Mineo Wakita
Date: Thu, 30 Jul 2009 19:25:27 -0500
AggieSat2 is operating on 436.25 MHz. The mode is a proprietary modem
protocol as the main radio is a COTS data modem. We have been relying
on transparency of radio for contacts. To our knowledge the only way
to decipher the code is to have a model MHX425 that can speak the
proprietary language. The company would not share such details with us.
It is frequency hopping but set to hop continually to 436.25 MHz.
> AggieSat frequency?
> Please teach me AggieSat frequency and mode.
> Thank you.
>
> http://www.ne.jp/asahi/hamradio/je9pel/
> Mineo Wakita, JE9PEL, JAMSAT member
Its actually at 19200 bps, and its a data modem with proprietary
synchronization protocols (it is an off the shelf data modem, the company
wouldn't even let us know what all those settings were). To our knowledge
a unit of similar type is needed for decoding.
If you can receive the beacon (a 5 second burst that initiates on a 1/20Hz
repetition cycle) we would love to hear about it. It appears Bevo and
AggieSat are stuck together right now. We are looking for aliveness
confirmation until we can get the units in a stable state.
We have had one contact ourselves, and a few from amateurs reported that
show it is alive, but maybe weak. If you can give similar confirmation with
times it would be great to help aid us to get the satellites in a stable
configuration.
On Fri, Jul 31, 2009 at 5:23 AM, Mineo Wakita wrote:
> Hello John,
>
> > AggieSat2 is operating on 436.25 MHz.
>
> Thank you.
>
> Is this frequency 1200bps? or 9600bps?
>
> JE9PEL, Mineo Wakita
Decoding is difficult. The radio is an Microhard MHX425 data modem. It has
proprietary synchronization and protocol behavior. Unless you have a modem
such as that you probably wont be able to receive the data from the radio.
Be that as it may any more contacts and recordings you can make with time
stamps to show that the unit is still alive at specific times would be
fantastic. Our data suggests that Bevo and AggieSat did not separate. We are
receiving weak signals. Were hoping they come apart later in the mission.
Until they do separate, any indication and proof from amateurs that it is
still in a functional state (ie: beaconing) would be very welcome throughout
the mission until we can either get a handle on their state, or fully operating.
Sincerely, John KE5JTG
--
John Graves
Masters Candidate
Graduate Lab Manager
AggieSat Lab, Texas A&M University http://www.aggiesat.org/
ANDE-2, DRAGONSat #6
I captured two files that Castor, Pollux, BEVO-1, AggieSat-2 were deployed. (C) NASA TV
After shot After deploy
ANDE-2, DRAGONSat #7
I decoded some signals from Castor(KD4HBO-1) and Pollux(POLLUX-1),
145.825MHz, 1200bps, TLE of STS-127.
08:52-09:01UTC (17:52-18:01JST), 31 Jul 2009, Mel 61deg
POLLUX-1>CQ,TELEM [07/31/09 17:54:43] <UI>:MEMS 55836 2.59 2.58 2.44 11.887 12.550 10.662 0.03 0.09 -3.998 -5.05 -34.83 -5.36 17.15 17.49 17.00 2.60 4 49 16
POLLUX-1>CQ,TELEM [07/31/09 17:55:49] <UI>:MEMS 55902 2.59 2.57 2.45 11.887 12.334 10.778 -0.220 0.775 -2.883 -5.80 -28.55 -20.34 17.29 17.75 17.03 2.60 27 42 4
POLLUX-1>CQ,TELEM [07/31/09 17:56:15] <UI>:SYST 55935 0 0 33 0 014a 1478 0000 13e8 0007 1228 ffff 15c0 0025 1408 ffff ffff 0156 08c8 0fbc 003c
KD4HBO-1>CQ,TELEM [07/31/09 17:56:31] <UI>:SYS 51090 65535 0 30 0 fff3 0dd0 fffa 0ad8 fe5b 1368 ffec 0fa0 fff6 10d8 ffed 1160 13.7 5.0 10.4 .13 0.81 0.81 7.04 4.16 4.16 25 9 41 A
POLLUX-1>CQ,TELEM [07/31/09 17:56:55] <UI>:MEMS 55968 2.59 2.57 2.46 11.887 12.550 10.778 -0.119 1.119 0.885 -4.17 -6.05 -27.55 17.36 17.79 17.44 2.60 36 0 8
KD4HBO-1>CQ,TELEM [07/31/09 17:57:02] <UI>:SYS 51120 65535 0 30 0 fffe 0de0 fff4 0ae0 fff8 1338 fffb 0fb8 fe45 1100 ffe3 1178 13.7 5.0 9.9 .43 -1.13 0.60 6.46 4.16 4.16 51 41 19
POLLUX-1>CQ,TELEM [07/31/09 17:57:21] <UI>:SYST 56001 0 0 33 0 ffff 14c8 0000 13f0 016d 1218 0014 15a8 0000 1470 ffff ffff 0158 08c6 0fba 003c
KD4HBO-1>CQ,TELEM [07/31/09 17:57:31] <UI>:SYS 51150 65535 0 30 0 ffb7 0db0 fff6 0ae8 fe74 1338 fff8 0f98 fffe 1130 ffff 1198 13.7 5.0 9.9 .52 -1.08 0.00 7.04 4.16 4.16 24 1 9 A
POLLUX-1>CQ,TELEM [07/31/09 17:58:27] <UI>:SYST 56067 0 0 33 0 0002 14d8 fffe 13c0 0001 1290 fffe 1598 0011 1490 ffff ffff 015a 08c8 0fb8 0036
POLLUX-1>CQ,TELEM [07/31/09 17:59:07] <UI>:MEMS 56100 2.59 2.58 2.45 12.03 12.996 11.09 0.113 0.778 3.778 -1.01 13.70 -13.65 17.80 18.19 17.58 2.61 9 27 2
POLLUX-1>CQ,TELEM [07/31/09 18:00:13] <UI>:MEMS 56166 2.59 2.58 2.45 12.03 12.996 11.09 0.222 0.776 3.885 -0.41 14.58 -13.19 17.83 18.29 17.59 2.60 23 14 15
Space-Track
POLLUX findu
ANDE-2 POLLUX is working now at findu.com.
ANDE-2 CASTOR is similar too.
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