HOME

TheInfoList



OR:

KOMPSAT-1 (Korean Multi-purpose Satellite-1), also known as Arirang-1, was a satellite created by the Korea Aerospace Research Institute (KARI) and launched by a United States launch vehicle on 21 December 1999. This was the first satellite built primarily by South Korean engineers, although previous foreign-built satellites had been launched by Korean companies. It took its name from the popular Korean folk song
Arirang "Arirang" (; ) is a Korean folk song. There are about 3,600 variations of 60 different versions of the song, all of which include a refrain similar to "''Arirang, arirang, arariyo'' ()". It is estimated the song is more than 600 years old. ...
.


Instruments

It carried an Electro-Optical Camera (EOC) able to distinguish objects with a diameter of with a footprint of 17 km. The satellite carried
remote sensing Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation. The term is applied especially to acquiring information about Earth ...
instruments for providing digital cartography of Korea, and status of
marine biology Marine biology is the scientific study of the biology of marine life, organisms in the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies ...
. Also included was the Ionospheric Measurement Sensor (IMS) to monitor
ionospheric The ionosphere () is the ionized part of the upper atmosphere of Earth, from about to above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. It plays an ...
parameters along the satellite orbit and the High Energy Particles Detector (HEPD).


High Energy Particle Detector (HEPD)

The High Energy Particle Detector (HEPD) instrument consists of a Proton and Electron Spectrometer (PES), a Linear Energy transfer Spectrometer (LET), a Total Dose Monitor (TDM), and a Single Event Monitor (SEM), PES measures protons from 6.4
MeV In physics, an electronvolt (symbol eV, also written electron-volt and electron volt) is the measure of an amount of kinetic energy gained by a single electron accelerating from rest through an electric potential difference of one volt in vacuum. ...
to 38 MeV in 3 energy channels, electrons from 0.25 MeV to <2.0 MeV in 3 energy channels, and
alpha particle Alpha particles, also called alpha rays or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. They are generally produced in the process of alpha decay, but may also be produce ...
s from 15 MeV to 60 MeV in an energy channel. LET measures linear energy transfer. TDM measures total ionizing dose of radiation accumulated on RADFET
dosimeter A radiation dosimeter is a device that measures dose uptake of external ionizing radiation. It is worn by the person being monitored when used as a personal dosimeter, and is a record of the radiation dose received. Modern electronic personal d ...
s. SEM measures single event upset (SEU).


Ionospheric Measurement Sensor (IMS)

The Ionospheric Measurement Sensor (IMS) is composed of a Langmuir probe (LP) and of the Electron Temperature Probe (ETP) developed by K. Oyama (
Institute of Space and Astronautical Science (ISAS) is a Japanese national research organization of astrophysics using rockets, astronomical satellites and interplanetary probes which played a major role in Japan's space development. Since 2003, it is a division of Japan Aerospace Ex ...
(ISAS), Japan). LP measures the in-situ electron temperature and density and ETP measures the in-situ electron temperature and floating potential. The instrument monitored the variation of the nighttime ionosphere along the satellite track until the unexpected power failure of the probes on 2 August 2001.


Launch

The satellite was launched from Vandenberg Air Force Base in California on a Taurus 2110. It had been built in
Daedeok Science Town Daedeok Innopolis, formerly known as Daedeok Science Town, is the research and development district in the Yuseong-gu district in Daejeon, South Korea. Daedeok Innopolis grew out of the research cluster established by President Park Chunghee i ...
in Daejeon, South Korea. The parts were shipped in three stages from Korea to California by First Express International, a Korean shipping firm. The KOMPSAT-1 was succeeded by the KOMPSAT-2 in 2006.


Mission

On 30 December 2007, the KARI reported that they had lost contact with the satellite. It is suspected to have had a malfunction that has affected power generation. After the loss of contact with the satellite, the mission was formally ended 31 January 2008.


References


External links


Profile of Korean space program by The Korea Times
{{Authority control Satellites of South Korea Satellites orbiting Earth Spacecraft launched in 1999