CubeSat Amateur Laser Communications

Block diagram of proposed Cubesat with laser communicator - Credit Oleg Nizhnik

Block diagram of proposed Cubesat with laser communicator – Credit Oleg Nizhnik

On November 19 Oleg Nizhnik gave a presentation on CubeSat amateur laser communication with Earth to Moon orbit data link capability.

In his paper Oleg says the available bands at 2.4 GHz and 5.8 GHz for amateur satellite communication are increasingly crowded. Higher frequency amateur bands meanwhile require uncommon microwave parts to implement transceivers, and working with 10 GHz or above require electric power typically not available in CubeSat. Therefore, to enable amateur Moon exploration, amateur laser communicator built of common, low-cost parts will help to extend amateur satellites operating range up to at least moon orbit.

The presentation was made in the 3rd Mission Idea Contest (MIC3) held during the 2nd UNISEC Global Meeting at Kyushu Institute of Technology, Kitakyushu, Japan, Nov. 19, 2014.

Watch MIC3 #7 – CubeSat amateur laser communication with Earth to Moon orbit data link capability

Presentation slides https://www.spacemic.net/pdf/mic3_finalist/P8)CubeSat%20amateur%20laser.pdf

Abstract https://www.spacemic.net/pdf/mic3_finalist/8)CubeSat%20amateur%20laser%20communicator%20with%20Earth%20to%20Moon%20orbit%20data%20link%20capability.pdf

The videos of other presentations given at MIC3 are at
https://www.youtube.com/user/UNISECmovie/videos

Slides and abstracts are at
https://www.spacemic.net/index.html#finalpresentations

Amateur Satellite Seed Funding

AMSAT FOXOn December 2, 2014 the AMSAT-NA Board of Directors approved Technology Development Seed Funding.

As a part of AMSAT’s “Design The Next AMSAT Satellite” challenge, the Board of Directors approved $5000, within the 2015 engineering budget, to be used as seed money for future satellite development. Additional fund raising sources will also be investigated and pursued.

AMSAT President Barry Baines, WD4ASW, said, “We’re prepared to return to space starting in 2015 with a fleet of satellites that will equal, if not exceed, the performance, and availability to the average ham, of our previously popular AMSAT OSCAR 51. Meanwhile, we are preparing for the future looking to potentially leverage new technologies, to provide the best opportunities for enhancing amateur radio’s presence in space.”

Director Tom Clark, K3IO, noted the need for a defined future systems program. Tom said, “We saw a significant number of both new and old members who want to see the development of critical system elements for future opportunities by 2018-20. As I see it, critical ‘tall poles’ in applying potential technologies require significant work to begin now to ensure success.”

AMSAT is interested in supporting technology ideas that enhance the utility of using the CubeSat form factor to support more robust amateur satellite capabilities.  The scope of potential interest in not limited; some examples of  technology enhancement might include:

+ Microwave technology suitable for use in amateur spacecraft. This includes the need to identify optimum frequency bands.

+ Complementary, low-cost ground systems, including an effective ~1º antenna pointing system.

+ Define and develop optimum coding and modulation schemes for low power microwave use.

+ Attitude determination & control systems to point the spacecraft antennas towards the user while maximizing solar panel production.

Individuals interested in learning more about this initiative should contact AMSAT Vice President-Engineering Jerry Buxton, N0JY (n0jy at amsat.org).

Meanwhile, the development of AMSAT’s current series of the Fox-1 cubesats continues on schedule. AMSAT Vice-President of Engineering, Jerry Buxton, N0JY reported during the Board meeting that construction and testing of five Fox satellites is on schedule:

+ Fox-1A will launch on a NASA ELaNa flight during the 3rd quarter of 2015 from Vandenberg AFB,

+ Fox-1B will fly with the Vanderbilt University radiation experiments expected in 2016.

+ Fox-1C will launch on Spaceflight’s maiden mission of the SHERPA multi-cubesat deployer during the 3rd quarter of 2015. This flight was purchased by AMSAT.

+ Fox-1D is a flight spare for Fox-1C. If not needed as a spare it will become available to launch on any open launch slot which becomes available and be submitted in a CSLI proposal in 2015.

+ Fox-1E is built as a flight spare for Fox-1B but has been included in a student science proposal as part of the November, 2014 Cubesat Launch Initiative (CSLI) for an ELaNa flight slot. If selected the Fox-1B spare will fly as Fox-1E.

More details of the “Design The Next AMSAT Satellite” challenge can be found on-line at:
http://www.amsat.org/?p=3395

[ANS thanks the AMSAT Board Of Directors for the above information]

AMSAT-NA http://amsat.org/

UWE-3 CubeSat Update

UWE-3 LogoUWE-3 was launched with FUNcube-1 on November 21, 2013, the team say they will now be temporarily ending operations.

Today, more than one year after launch, there will be a temporary end of operations caused by the end of funding.

However, UWE-3 is in a very good health condition with fully charged batteries and operations may be continued depending on future research plans.  

Without any reception from ground, UWE-3 will carry out a warm reset every four days and switch regularly between the redundant on-board processors and radios. Therefore, UWE-3 will switch back to its nominal frequency of 437.385 MHz.

Nevertheless we appreciate the extensive support we received from the HAM amateurs in the past and hope that also in the future the status of UWE-3 will be monitored with your support, like you did so many times in the past year. Thank you so much for the very helpful cooperation in this respect!

Yours sincerely,

UWE-3 Team

UEW-3 News
http://www7.informatik.uni-wuerzburg.de/forschung/space_exploration/projects/uwe_3/uwe_3_news/

Surrey Space Centre SME-SAT

SME-SAT - Surrey Space Centre

SME-SAT – Surrey Space Centre

The Surrey Space Centre (SSC) are developing a 3U CubeSat SME-SAT expected to launch into a 550-620 km orbit using the ISIPOD CubeSat deployer.

The mission objectives are:
A: Outreach – The satellite will provide beacons for which amateur satellite users and ham radio users will be able to receive.
B: Space qualification and performance characterisation of sensors.
• High performance COTS Gyroscopes (x3).
• High precision MEMS accelerometers.
• 2 Aperture Star Camera, At a later point in the mission these will be used in conjunction with the ADCS to characterise the closed loop performance of the sensors.
C: Performance characterisation of Nano-Control Moment Gyros (CMGs) for agility. The mission is equipped with 4-Nano-CMGs in a pyramid configuration for ADCS. This part of the mission will evaluate the performance of this system on the ADCS and agility of the satellite.
D: Space qualification and performance characterisation of the EPS The EPS for this mission has heritage from the Delfi-C3 and other missions and includes additional improvements to be demonstrated on this mission.
E: Smart Thermal Radiation Devices (STRD tiles) SME-SAT is equipped with a number of STRD tiles on the outside faces of the satellite for passive thermal management of the internal structure.
F: Flux Gate Magnetometer The mission contains a scientific grade miniaturized flux gate magnetometer that sits on the end of a deployable boom to improve the performance of the sensor. This payload will be switched into the ADCS for evaluation of performance during parts of the mission but is not the primary magnetometer for ADCS.
G: GPS SME-SAT also contains an experimental GPS system that will be switched into the ADCS loop at stages in the orbit to evaluate the performance of the system.

Planning a 9k6 RC-BPSK UHF downlink using AX25.

Further information at http://www.surrey.ac.uk/ssc/research/space_vehicle_control/smesat/index.htm

IARU Satellite Frequency Coordination http://www.amsat.org.uk/iaru

Ofcom discuss Pocket Spacecraft

View of St Pauls from Ofcom office - Credit Michael Johnson M0MJJ

View of St Pauls from Ofcom office – Credit Michael Johnson M0MJJ

On Wednesday, November 26, Michael Johnson M0MJJ discussed the licensing of thousands of Pocket Spacecraft with the UK communications regulator Ofcom.

Pocket Spacecraft

Pocket Spacecraft

The plan is that a 3U CubeSat will carry Pocket Spacecraft known as ‘Scouts’ to the Moon. A ‘Scout’ is a disk with flexible electronics, smaller than a CD, containing a transceiver, antenna and solar cells. The CubeSat should first release a batch of the wafer thin Scout satellites into Earth orbit and then deploy another batch of the Scout satellites into Lunar orbit.

It is understood the mission plans to use the 435 MHz and 2400 MHz bands.

Pocket Spacecraft http://pocketspacecraft.com/

Follow Pocket Spacecraft on Twitter @mySpacecraft

UK radio ham’s Lunar CubeSat to go ahead
https://amsat-uk.org/2013/08/26/uk-radio-hams-lunar-cubesat-to-go-ahead/

BBC: ‘Pocket spacecrafts’ to become a reality
https://amsat-uk.org/2014/05/15/bbc-pocket-spacecrafts-to-become-a-reality/

Goonhilly tracking FUNcube

Goonhilly 1 "Arthur" - Credit GES Ltd

Goonhilly 1 “Arthur” – Credit GES Ltd

Goonhilly Earth Station (GES) Ltd are transforming the BT satellite communications site at Goonhilly into a new Space Science centre.

The Goonhilly Satellite Earth Station is located on the Lizard Peninsula in Cornwall. It’s famous for many reasons, but perhaps most notably, for receiving, the first ever trans-Atlantic satellite TV images, broadcast by Telstar, on July 11, 1962. The impressive 25.9m dish called Arthur was used for that historic event.

The Register has published an article by journalist SA Mathieson following a recent visit to the site. This included seeing the AMSAT-UK ground station used to track the satellites FUNcube-1 and UKube-1 which both carry educational payloads developed by radio amateurs from the voluntary satellite organisations AMSAT-UK and AMSAT-NL. The station comprises an Asus PC with FUNcube Dongle Pro+ Software Defined Radio (SDR) and a turnstile (crossed dipoles) antenna.

SA Mathieson also visited another recent addition to the site, the radome used by the imaging start-up Planet Labs Inc to communicate with its constellation of  “Dove” CubeSats.

Read Suffering satellites! Goonhilly’s ARTHUR REBORN for SPAAAACE
http://www.theregister.co.uk/2014/11/25/geeks_guide_goonhilly/

Goonhilly Earth Station http://www.goonhilly.org/

FUNcube Telemetry Receive Antenna System
http://shop.amsat.org.uk/shop/article_45/FUNcube-Telemetry-Receive-Antenna-System.html

FUNcube Dongle Pro Plus SDR http://FUNcubeDongle.com/