F-1 is a

CubeSat A CubeSat is a class of miniaturized satellite based around a form factor consisting of cubes. CubeSats have a mass of no more than per unit, and often use commercial off-the-shelf (COTS) components for their electronics and structure. CubeSats ...

built by FSpace laboratory at

FPT University FPT University is a private university in Vietnam. FPT University is a member of FPT Group and has campuses in Hanoi (main), Ho Chi Minh City, Da Nang, Can Tho and Quy Nhon (in progress). History When founded in 2006, Associate Professor Tr ...

, in

Hanoi Hanoi or Ha Noi ( or ; vi, Hà Nội ) is the capital and second-largest city of Vietnam. It covers an area of . It consists of 12 urban districts, one district-leveled town and 17 rural districts. Located within the Red River Delta, Hanoi is ...

Vietnam Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making i ...

, in partnership with Angstrom Space Technology Center (ASTC),

Uppsala University Uppsala University ( sv, Uppsala universitet) is a public university, public research university in Uppsala, Sweden. Founded in 1477, it is the List of universities in Sweden, oldest university in Sweden and the Nordic countries still in opera ...

, Sweden and

Nanoracks Nanoracks LLC is a private in-space services companywhich builds space hardware and in-space repurposing tools.The company also facilitates experiments and launches of CubeSats to Low Earth Orbit. Nanoracks's main office is in Houston, Tex ...

LLC, United States. Its mission is to train young engineers and students about aerospace engineering and evaluate an advanced three-axis

magnetometer A magnetometer is a device that measures magnetic field or magnetic dipole moment. Different types of magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location. A compass is one such device, o ...

, Spin-Dependent Tunneling Magnetometer (SDTM) designed in Sweden by ASTC. F-1 was launched on 21 July 2012 and delivered to the

International Space Station The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA ...

(ISS) aboard

Kounotori 3 Kounotori 3 ( ja, こうのとり3号機; English: "white stork" ), also known as HTV-3, was the third flight of the Japanese H-II Transfer Vehicle. It was launched on 21 July 2012 to resupply the International Space Station (ISS) aboard the H ...

(HTV-3) along with the

RAIKO RAIKO ( ja, 雷鼓, literally ''thunder drum'') is a Japanese satellite which was built and operated by Tohoku University, Tohoku and Wakayama University, Wakayama Universities. A two-unit CubeSat, RAIKO was deployed from the International Spa ...

WE WISH WE WISH (World Environmental Watching and Investigation from Space Height) was a small commercial CubeSat which was deployed from the International Space Station (ISS) in October 2012 and which deorbited in March 2013. It was built by the Japan ...

Niwaka Niwaka or FITSAT-1 is a 1U CubeSat satellite deployed from the International Space Station (ISS) on 4 October 2012. The Niwaka satellite includes high power LEDs which are driven by 200 watts pulses, allowing Morse code style communication fr ...

and TechEdSat-1 cubesats. Then, on 4 October 2012, it was deployed into orbit from the ISS using the JEM-Small Satellite Orbital Deployer (J-SSOD) which was attached to the Kibō module's robotic arm. As of 2 November 2012, F-1 failed to confirm communication after the orbital deployment. CubeSats launched by ISS Expedition 33

Hardware

* Structure: aluminium alloy T-6061 * Power supply: body-mounted solar cells, rechargeable Li-Polymer battery * PIC16 and PIC18 micro-controllers * Yaesu VX-3R handheld transceivers * C328 low-resolution camera * Temperature sensors * Three-axis magnetometer (ASTC) *

2-meter band The 2-meter amateur radio band is a portion of the VHF radio spectrum that comprises frequencies stretching from 144 MHz to 148 MHz in International Telecommunication Union region (ITU) Regions 2 (North and South America plus Hawaii) ...

Dipole Antenna In radio and telecommunications a dipole antenna or doublet is the simplest and most widely used class of antenna. The dipole is any one of a class of antennas producing a radiation pattern approximating that of an elementary electric dipole w ...

* 70-cm band

Specifications

* Size: 10 cm x 10 cm x 10 cm (1U CubeSat) * Mass: 1 kg * Communication: 2 independent radios using amateur radio

Very high frequency Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves ( radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF ...

(VHF) and

Ultra high frequency Ultra high frequency (UHF) is the ITU designation for radio frequency, radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one ten ...

(UHF) bands, transmission speed 1200 bit/s; AFSK and PWM Morse code modulation, KISS protocol * Payload: low resolution C328 camera (640 × 480 maximum resolution, 8 bit color) * Sensors: temperature sensors and three-axis magnetometer * Targeted orbit lifetime: at least 3 months on orbit (depend on release altitude from the ISS)

Communication subsystem and Packet format

1. Backup UHF channel (only operational in daylight): * Frequency: 437.485 MHz * Modulation: Narrow FM * Power: about 0.2

watt The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Wa ...

RF output * Antenna: half-wave dipole * Beacon interval: 20 seconds duration, repeated every 90 seconds Pulse-Width-Modulation

Morse code Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one of ...

telemetry Telemetry is the in situ data collection, collection of measurements or other data at remote points and their automatic data transmission, transmission to receiving equipment (telecommunication) for monitoring. The word is derived from the Gr ...

beacon A beacon is an intentionally conspicuous device designed to attract attention to a specific location. A common example is the lighthouse, which draws attention to a fixed point that can be used to navigate around obstacles or into port. More mode ...

2. Main VHF channel (operational during night time but may be turned on in daylight later) * Frequency: 145.980 MHz * Modulation scheme: AFSK/FM * Power: 1.0 watt RF output * Antenna: half-wave dipole * Baud rate: 1200 bit/s * Telemetry and interval: one burst of 3 telemetry packets in KISS format every 30 seconds (interval configurable) F-1's KISS packet format Note: * F-1 periodically sends a burst of 3 telemetry packets with the same content, to avoid

packet loss Packet loss occurs when one or more packets of data travelling across a computer network fail to reach their destination. Packet loss is either caused by errors in data transmission, typically across wireless networks, or network congestion.Kur ...

* Time in UTC, 24 hours format * Year count starting from 2012 (2012 equals 0, 2013 equals 1 and so on...) * Battery voltage reading is accurate to 0.01

volt The volt (symbol: V) is the unit of electric potential, electric potential difference (voltage), and electromotive force in the International System of Units (SI). It is named after the Italian physicist Alessandro Volta (1745–1827). Defi ...

, values are multiplied by 100. Divide by 100 to get actual value. * Solar cells voltage reading is accurate to 0.10 volt, values are multiplied by 10. Divide by 10 to get actual value. * Temperature readings from sensors, will be added with 100 before transmission to ensure a positive number so please subtract 100 to get actual value * 112 bits, divided into 14

byte The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit ...

References

External links

Home page

F1: un micro satellite vietnamien dans l'espace fin 2011

Vietnam Student CubeSat F-1
24/2/2012 {{Orbital launches in 2012 Spacecraft launched in 2012 CubeSats Student satellites 2012 in Vietnam Satellites orbiting Earth Satellites of Vietnam Satellites deployed from the International Space Station