BeeSAT-1
Berlin Experimental Educational Satellite, Technical University of Berlin.
Mission
BEESAT (Berlin Experimental and Educational Satellite) is a picosatellite project at TU Berlin. The main objective is the in-Orbit-Verification of miniaturized reaction wheels.
Downlink
435.950 MHz FM 4k8 GMSK 0.5W, Mobitex
Up- and downlink with picosatellites of the BEESAT series is established by half-duplex GMSK modulated narrow-band radio at 435.950 MHz. The standard baudrate is 4800 bps but can be switched to 9800 bps for increased channel capacity at higher elevations. Each transmission at the higher baudrate is announced by a small 4800 bps header to allow for adaptive receiver re-configuration. The output power of the satellites is 27 dBm (0.5 W) using quarter-wave monopole antennas with toroidal radiation pattern.
Call
DP0BEE
Status
Deployed and active – CW beacon not active and telemetry only over Europe.
BeeSAT-2
Mission
BeeSAT is a Pico satellite project at the Technical University of Berlin. The main objective of the project is the verification of newly developed space, miniaturized reaction wheels for Pico satellites and other technologies. With the on-board camera images should be taken from the surface and then transmitted to the ground station for analysis. It also serves as an additional means to verify the position control. A sensor with 640 by 480 pixels is used before which sits a Bayer mosaic filter. The color depth is 8 bits per component, and the images are compressed with variable compression ratio. BeeSAT (c) TUB / ILR
With an edge length of just ten centimeters and a total mass of one kilogram BeeSAT contains three reaction wheels that were developed as part of the German Aerospace Center (DLR) funded project in collaboration with industry, other advanced modules that to be used for the first time in space. This includes a powerful and redundant on-board computer for Pico satellites. The software runs on a comprehensive flight by the Fraunhofer Institute for Computer Architecture and Software Technology (FIRST) provisioned operating system that is used successfully since 2001 in the DLR BIRD microsatellite and has been adapted for Pico satellite applications. The position control of the reaction wheels in addition BeeSAT uses a highly integrated system newly developed sun sensors, magnetic field sensors, solenoids, and sensors that measure the rotation rate. These components are controlled by an expensive position control software can also determine the web position onboard. Thus it is possible, regarding the communication to increase the autonomy of the satellites and ground stations to reduce operating expenses.
Up- and downlink with Pico satellites of the BeeSAT series is established by half-duplex GMSK modulated narrow-band radio at 435.9500 MHz The standard baud rate is 4800 bps but can be switched to 9600 bps for increased channel capacity at higher elevations. Each transmission at the higher baud rate is announced by a small 4800 bps header to allow for adaptive receiver re-configuration. The output power of the satellites is 27 dBm (0.5 W) using quarter-wave monopole antennas with toroid radiation pattern.
Orbital parameters
Name BeeSAT-2 NORAD 39136 COSPAR designation 2013-015-G Inclination 64.869 RA of A. Node 176.112 Eccentricity 0.0034096 Argument of Perigee 288.730 Revs per day 15.05610423 Period 1h 35m 38s (95.63 min) Semi-major axis 6 928 km Perigee x Apogee 526 x 573 km BStar (drag term) 0.000482330 1/ER Mean anomaly 71.013
Downlink
435.950 MHz FM CW or 4k8/9k6 GMSK 0.5W
Call
DP0BEF
Preliminary TLE
BEESAT-2 1 99999U BEESAT-2 13111.50000000 -.00000022 00000-0 -18943-5 0 00009 2 99999 065.0052 026.5594 0011818 218.6713 261.0081 14.97601851000171
Status
Deployed and active
After the launch of Bion-M1 at April 19 at 10:00 UTC. We have to wait until Bion-M1 performs an orbital maneuver to reach a circular orbit at 575 km altitude only then the three CubeSats will separate, this will probably be after 32 Orbits (21/04/2013 at about 11:00 UTC). Unfortunately, so far we have no information about the exact date of separation. The sequence of separation with 16 second intervals is as follows: BeeSAT-3, SOMP, BeeSAT-2.
BeeSAT-3
Mission
BeeSAT is a Pico satellite project at the Technical University of Berlin. The main objective of the project is the verification of newly developed space, miniaturized reaction wheels for Pico satellites and other technologies. With the on-board camera images should be taken from the surface and then transmitted to the ground station for analysis. It also serves as an additional means to verify the position control. A sensor with 640 by 480 pixels is used before which sits a Bayer mosaic filter. The color depth is 8 bits per component, and the images are compressed with variable compression ratio. BeeSAT (c) TUB / ILR
With an edge length of just ten centimeters and a total mass of one kilogram BeeSAT contains three reaction wheels that were developed as part of the German Aerospace Center (DLR) funded project in collaboration with industry, other advanced modules that to be used for the first time in space. This includes a powerful and redundant on-board computer for Pico satellites. The software runs on a comprehensive flight by the Fraunhofer Institute for Computer Architecture and Software Technology (FIRST) provisioned operating system that is used successfully since 2001 in the DLR BIRD microsatellite and has been adapted for Pico satellite applications. The position control of the reaction wheels in addition BeeSAT uses a highly integrated system newly developed sun sensors, magnetic field sensors, solenoids, and sensors that measure the rotation rate. These components are controlled by an expensive position control software can also determine the web position onboard. Thus it is possible, regarding the communication to increase the autonomy of the satellites and ground stations to reduce operating expenses.
Up- and downlink with Pico satellites of the BeeSAT series is established by half-duplex GMSK modulated narrow-band radio at 435.9500 MHz The standard baud rate is 4800 bps but can be switched to 9600 bps for increased channel capacity at higher elevations. Each transmission at the higher baud rate is announced by a small 4800 bps header to allow for adaptive receiver re-configuration. The output power of the satellites is 27 dBm (0.5 W) using quarter-wave monopole antennas with toroid radiation pattern.
Orbital parameters
Name BeeSAT-3 NORAD 39134 COSPAR designation 2013-015-E Inclination 64.866 RA of A. Node 173.324 Eccentricity 0.0033812 Argument of Perigee 289.104 Revs per day 15.06379776 Period 1h 35m 35s (95.58 min) Semi-major axis 6 925 km Perigee x Apogee 524 x 571 km BStar (drag term) 0.000586530 1/ER Mean anomaly 70.648
Downlink
435.950 MHz FM 4k8/9k6 GMSK 0.5W
Call
DP0BEG
Preliminary TLE
BEESAT-3 1 99998U BEESAT-3 13111.50000000 -.00000022 00000-0 -18943-5 0 00009 2 99998 065.0052 026.5594 0011818 218.6713 261.0081 14.97601851000170
Status
Not heard. After the launch of Bion-M1 at April 19 at 10:00 UTC. We have to wait until Bion-M1 performs an orbital maneuver to reach a circular orbit at 575 km altitude only then the three CubeSats will separate, this will probably be after 32 Orbits (21/04/2013 at about 11:00 UTC). Unfortunately, so far we have no information about the exact date of separation. The sequence of separation with 16 second intervals is as follows: BeeSAT-3, SOMP, BeeSAT-2.
Deployed
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