F-1 is a

CubeSat A CubeSat is a class of small satellite with a form factor of cubes. CubeSats have a mass of no more than per unit,, url=https://static1.squarespace.com/static/5418c831e4b0fa4ecac1bacd/t/5f24997b6deea10cc52bb016/1596234122437/CDS+REV14+2020-07-3 ...

built by FSpace laboratory at FPT University, in

Hanoi Hanoi ( ; ; ) is the Capital city, capital and List of cities in Vietnam, second-most populous city of Vietnam. The name "Hanoi" translates to "inside the river" (Hanoi is bordered by the Red River (Asia), Red and Black River (Asia), Black Riv ...

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

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

Uppsala University Uppsala University (UU) () 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 operation. Initially fou ...

, Sweden and

Nanoracks Nanoracks LLC is an American private in-space services company which 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 H ...

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, ...

, 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 a large space station that was Assembly of the International Space Station, assembled and is maintained in low Earth orbit by a collaboration of five space agencies and their contractors: NASA (United ...

(ISS) aboard Kounotori 3 (HTV-3) along with the RAIKO, WE WISH, Niwaka 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) a ...

Dipole Antenna In radio and telecommunications a dipole antenna or doublet is one of the two simplest and most widely used antenna types, types of antenna; the other is the monopole antenna, monopole. The dipole is any one of a class of antennas producin ...

* 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 (VHF) and

Ultra high frequency Ultra high frequency (UHF) is the ITU designation for 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 tenth of a meter ...

(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 (physics), 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 quantification (science), quantify the rate of Work ...

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

Morse code Morse code is a telecommunications method which Character encoding, encodes Written language, text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code i ...

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

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.Ku ...

* 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, Voltage#Galvani potential vs. electrochemical potential, electric potential difference (voltage), and electromotive force in the International System of Units, International System of Uni ...

, 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 un ...

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