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Emitter used on several NASA probes
The Small Deep Space Transponder is a transponder designed by JPL specifically for deep space probes. It unifies a number of communication functions -
Small_Deep_Space_Transponder
NASA flyby mission to asteroid Braille and Comet Borrelly (1998–2001)
Camera and Imaging Spectrometer Ion and Electron Spectrometer Small Deep Space Transponder Ka-Band Solid State Power Amplifier Beacon Monitor Operations
Deep_Space_1
The Iris transponder is a small, low power deep-space transponder designed by JPL for use in cubesats. It unifies a number of communication functions -
Iris_(transponder)
NASA orbiter mission to asteroid Vesta and dwarf planet Ceres (2007–2018)
thruster, among the other technologies validated by the DS1 was the Small Deep Space Transponder, which is used on Dawn for long-range communication. Twenty-six
Dawn_(spacecraft)
NASA rover exploring Mars since 2012
for faster transmission speeds. Telecommunication included a small deep space transponder on the descent stage and a solid-state power amplifier on the
Curiosity_(rover)
Family of software-defined radios
space probe) mission set to launch in 2027. Electra (radio) - A UHF transponder for satellite to surface communication Small Deep Space Transponder -
Frontier_Radio
NASA/ESA/CSA space telescope launched in 2021
The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. It is the largest telescope in space, and is equipped
James_Webb_Space_Telescope
NASA mission to Mercury
six Sun sensors. The probe included two small deep space transponders for communications with the Deep Space Network and three kinds of antennas: a high
MESSENGER
Crewed interplanetary spacecraft concept
The Deep Space Transport (DST), also called Mars Transit Vehicle, is a crewed interplanetary spacecraft concept by NASA to support science exploration
Deep_Space_Transport
NASA/ESA space telescope launched in 1990
recorded some of the most detailed visible light images, allowing a deep view into space. Many Hubble observations have led to breakthroughs in astrophysics
Hubble_Space_Telescope
NASA spacecraft active since 2005
a backup), one 35-watt Ka-band amplifier, and two Small Deep Space Transponders (SDSTs). Two smaller low-gain antennas are also present for lower-rate
Mars_Reconnaissance_Orbiter
Partially reusable launch system and space plane
as a space tug for transfers between orbits and the Moon, and a reusable nuclear upper stage for deep space travel. After the release of the Space Shuttle
Space_Shuttle
Tracking and communication system developed by NASA and JPL
utilized. In addition, the spacecraft was to include a transponder compatible with the Deep Space Instrumentation Facility (DSIF) ground stations established
Unified_S-band
Robotic mission that deployed the ''Curiosity'' rover to Mars in 2012
communication, for redundancy. An X band Small Deep Space Transponder for communication directly to Earth via the NASA Deep Space Network and a UHF Electra-Lite
Mars_Science_Laboratory
Space mission to an asteroid
compress data to save storage space. The probe will communicate with Earth using a specially designed X-band transponder and high-gain, flat-panel antenna
M-Argo
Communication using lasers in outer space
optical communications using SOTA (Small Optical TrAnsponder) – Payload verification results and experiments on space quantum communications"". Acta Astronautica
Laser_communication_in_space
European visible and near-infrared space observatory, launched in 2023
1051/0004-6361/202450781. "Euclid opens data treasure trove, offers glimpse of deep fields". European Space Agency. ESA. Retrieved 19 March 2025. "Euclid Science Archive"
Euclid_(space_telescope)
Indian national space and aeronautics agency
subsequently developed various small-lift and medium-lift launch vehicles, enabling the agency to launch various satellites and deep space missions. ISRO has full
ISRO
Earth station in Western Australia
orbit and in deep space. It is located 10 kilometres (6.2 mi) south of the town of New Norcia, Western Australia. It was the first ESA deep space ground station
New_Norcia_Station
NASA spacecraft communication system
(TDRS), Supporting ground terminal systems, The Bilateration Ranging and Transponder System (BRTS), Merritt Island Launch Annex (MILA) relay, Network Control
Space_Network
Planned lunar exploration mission
all the phases of the mission. IMT will also manufacture the X-band transponder needed for establishing communications to the Earth and performing navigation
LUMIO_(space_mission)
Objects intentionally placed into orbit
ground stations, called transponders. Many satellites use a standardized bus to save cost and work, the most popular of which are small CubeSats. Similar satellites
Satellite
The European Space Agency (ESA) operates a number of space missions, both individually and in collaborations with other space agencies such as U.S. NASA
List of European Space Agency programmes and missions
List_of_European_Space_Agency_programmes_and_missions
Overview article
(SPHERES) Space Test Program-H2-Microelectromechanical System-Based (MEMS) PICOSAT Inspector (STP-H2-MEPSI) Space Test Program-H2-Radar Fence Transponder (STP-H2-RAFT)
Scientific research on the International Space Station
Scientific_research_on_the_International_Space_Station
Second NASA orbiter mission to Jupiter (2011–Present)
scientists were able to measure velocity changes as small as 0.01 millimeter per second using a NASA's Deep Space Network tracking antenna, from a distance of
Juno_(spacecraft)
Spacecraft and rover telecommunications package
relay payload) Mars Express (1st generation UHF relay payload) Small Deep Space Transponder "MRO Spacecraft and Instruments: Electra". NASA. 22 November
Electra_(radio)
Failed NASA mission to Mars (1998–1999)
high-gain antenna to transceive data with the Deep Space Network over the x band. The radio transponder designed for the Cassini–Huygens mission was used
Mars_Climate_Orbiter
Proposed Japanese sample-return mission
Next Generation Small-Body Sample Return (NGSR) is a proposed space mission concept by the Japan Aerospace Exploration Agency (JAXA) aimed at returning
Next Generation Small-Body Sample Return
Next_Generation_Small-Body_Sample_Return
Public Sector Enterprise of Indian space agency
NewSpace India Limited (NSIL) is a Public Sector Undertaking (PSU) of the Government of India, under the Department of Space. NSIL is responsible for
NewSpace_India_Limited
Fictional technological device in Star Trek
" it can serve as an emergency signaling device/beacon, similar to a transponder, and can function as an automatic direction finder ("This Side of Paradise")
Communicator_(Star_Trek)
European space observatory for astrometry (2013–2025)
of Gaia's transponders. These are used to generate timing signals for the downlink of science data. A problem with an identical transponder on a satellite
Gaia_(spacecraft)
Electronic tracking technology
track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by
Radio-frequency identification
Radio-frequency_identification
European mission to study Comet 67P/Churyumov-Gerasimenko (2004–2016)
Rosetta was a space probe built by the European Space Agency that launched on 2 March 2004. Along with Philae, its lander module, Rosetta performed a
Rosetta_(spacecraft)
Planned 2020s private Venus astrobiology probe
Additionally, the mission will demonstrate an inexpensive, deep space mission with a small spacecraft and small launch vehicle, as well as mature the interplanetary
Venus_Life_Finder
Radar system used in air traffic control
reflections of radio signals, relies on targets equipped with a radar transponder, that reply the Mode that an interrogation pulse code corresponds to
Secondary_surveillance_radar
Name of various communications satellites
of small cavity antenna elements around the satellite's "equator" received 6 GHz microwave signals to relay back to ground stations. The transponder converted
Telstar
1982 science fiction film directed by Aaron Lipstadt
working on an illegal android program in their laboratory on a space station in deep space. The film was voted Best Science Fiction Film in 1983 by The
Android_(film)
Cargo ship of the United States Navy (1957–1990)
ship's hull, a transponder on the towed vehicle with an acoustic pulse triggered by a signal over the towing cable, and a sea floor transponder triggered by
USNS_Mizar
System for tracking and navigation of underwater vehicles or divers using acoustic signals
a set of three or more baseline transponders are deployed on the sea floor. The location of the baseline transponders either relative to each other or
Underwater acoustic positioning system
Underwater_acoustic_positioning_system
Reliable digital data delivery methods on unreliable channels
high-definition television) and IP data. Transponder availability and bandwidth constraints have limited this growth. Transponder capacity is determined by the selected
Error detection and correction
Error_detection_and_correction
2015 European Space Agency spacecraft
Interferometer Space Antenna (LISA), an ESA gravitational wave observatory planned to be launched in 2035. Formerly, the mission was known as Small Missions
LISA_Pathfinder
Regional satellite navigation system
stations will have dish antenna assembly. The space segment will consist of one geo-navigation transponder. A GAGAN-based flight management system will
GPS-aided GEO augmented navigation
GPS-aided_GEO_augmented_navigation
NASA space telescope for exoplanetology (2009–2018)
The Kepler space telescope was a space telescope launched by NASA in 2009 to discover Earth-sized planets orbiting other stars. Named after astronomer
Kepler_space_telescope
US experimental astrobiology research satellite
deep space radiation on DNA repair over long time beyond low Earth orbit. Selected in 2013 for a 2022 launch, the spacecraft will operate in the deep
BioSentinel
Nanosatellite
Thermal (SMT) NASA JPL/SDL IRIS X-Band Deep Space Transponder NASA GSFC Mission Operations Center NASA Deep Space Network Ground Communication After a successful
CubeSat_for_Solar_Particles
Fissure in a planet's surface from which heated water emits
photographs taken from deep-towed cameras, and PhD student Kathleen Crane published maps and temperature anomaly data. Transponders were deployed at the
Hydrothermal_vent
1988 attempted aircraft hijacking
hijacker noticing, pilot Fernando Murilo de Lima e Silva called for the transponder code 7500, which in the language of aeronautics indicates illegal interference
VASP_Flight_375
Theory of gravitation as curved spacetime
Weinberg 1972, ch. 8, sec. 7; for signals actively sent back by space probes (transponder measurements), cf. Bertotti, Iess & Tortora 2003; for an overview
General_relativity
1960 US lunar probe attempt
possible lunar) radiation belts, a VLF receiver for natural radio waves, a transponder to study electron density, and part of the flux-gate and search coil
Pioneer_P-31
NASA sample-return mission to Comet 81P/Wild 2 (1999–2011)
2011 with Stardust intercepting Comet Tempel 1, a small Solar System body previously visited by Deep Impact in 2005. Stardust ceased operations in March
Stardust_(spacecraft)
2014 aircraft disappearance
by a transponder on each aircraft; therefore, the ADS-B transponder was no longer functioning on Flight 370 after 01:21. The final transponder data indicated
Malaysia_Airlines_Flight_370
Vehicle or machine designed to fly in space
range of the Deep Space Network. A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Space telescopes
Spacecraft
Planetary defense nonprofit organization
performance analysis of a transponder equipped Gravity Tractor spacecraft, September 24, 2008. "After US, China plans "Deep Impact" mission". The Economic
B612_Foundation
Class of underwater acoustic positioning systems
Like USBL systems, SBL systems do not require any seafloor mounted transponders or equipment and are thus suitable for tracking underwater targets from
Short baseline acoustic positioning system
Short_baseline_acoustic_positioning_system
Technology development overview
Transponder – Amateur radio satellite Satellite Catalog Number – NORAD satellite identifier Space Based Space Surveillance – American military space surveillance
Outline of artificial satellites
Outline_of_artificial_satellites
Satellite radio service owned by SiriusXM
Satellite Radio Inc. was headquartered in New York City, and operated smaller studios in Los Angeles and Memphis.[citation needed] Sirius was founded
Sirius_Satellite_Radio
Space-based experiment to test the theory of general relativity
continuous transmission of a microwave signal to the rocket. A microwave transponder carried on the rocket returned the signal to the Earth. On the way up
Gravity_Probe_A
NASA interplanetary mission (1960)
beyond), this spacecraft did not use the Deep Space Network, which was not yet available, but a somewhat ad hoc Space Network called SPAN consisting of the
Pioneer_5
Planned sample-return mission by Japan to Phobos
Earth five years later in 2031. ESA will provide deep space communication equipment: a transponder and power amplifier, and will provide ground station
Martian_Moons_eXploration
Robotic European Space Agency lander that accompanied the Rosetta spacecraft
equipment. The company also built the probe's S-band and X-band digital transponder, used for communications with Earth. Netherlands Moog Bradford (Heerle
Philae_(spacecraft)
2007 American crewed spaceflight to the ISS
retrieved the P6 Transponder, relocated the S-band antenna from P6 to P1, and installed a new S-Band Baseband Signal Processor and Transponder on the P1 truss
STS-118
NASA probe of the Sun's outer corona
(PSP; previously Solar Probe, Solar Probe Plus or Solar Probe+) is a NASA space probe launched in 2018 to make observations of the Sun's outer corona. It
Parker_Solar_Probe
year occurred on 10 January, when a PSLV, launched from the Satish Dhawan Space Centre, placed four spacecraft into low Earth orbit. One of these spacecraft
2007_in_spaceflight
Real-time strategy computer game
used the transponder to trigger the satellite himself before dying of starvation and exposure. Rachel escapes the wreck with the transponder and makes
Homeworld:_Deserts_of_Kharak
Automatic ship station- and heading-holding systems
three transponders. The initial position of the transponders is determined by USBL and/ or by measuring the baselines between the transponders. Once that
Dynamic_positioning
Automatic collection and transmission of data
include munitions storage facilities, radioactive sites, volcanoes, deep sea, and outer space. Telemetry is used in many battery operated wireless systems to
Telemetry
European mission to study Jupiter and its moons since 2023
will be used. Downlink rates of 2 Gb/day are possible with ground-based Deep Space Antennas. On-board data storage capability is 1.25 Tb. The Juice main
Jupiter_Icy_Moons_Explorer
South Korean space agency
more than 3,000 km away from the Naro Space Center. Deep Space Ground Station The station communicates with a space probe, and is located in Yeoju, Gyeonggi
Korea Aerospace Research Institute
Korea_Aerospace_Research_Institute
Indian orbiter mission to Mars (2013–2022)
communications and navigation support to the mission "with their Deep Space Network facilities.".The space agency had planned the launch on 28 October 2013 but was
Mars_Orbiter_Mission
Search for a missing Boeing 777 in the southern Indian Ocean
implying that the aircraft had remained aloft for four hours after its transponder went offline; Malaysia denied the report. The Wall Street Journal later
Search for Malaysia Airlines Flight 370
Search_for_Malaysia_Airlines_Flight_370
Open source amateur radio mode
QO-100 wideband transponder M17 experiment (Apr 2021) Jasiukowicz, Marcin: SDR subsystem of OPS-SAT 1 – test trial of M17 protocol in space, M17 Conference
M17_(amateur_radio)
Solar sail spacecraft
morphologies and properties, and regolith properties. The mission used NASA's Deep Space Network as the primary component for communications and tracking. The
Near-Earth_Asteroid_Scout
Gunship aircraft series by Lockheed
self-defense strike resulted in some hostile fatalities." Notably the AC-130J's transponder remained on during the strike, and the remainder of its sortie. AC-130J
Lockheed_AC-130
Defunct Communications Satellite
centimetres (35 in) and weighed 77 kilograms (170 lb). The satellite had a transponder (receiver and transmitter) with a 50 MHz bandwidth that could relay a
Telstar_1
Failed Japanese orbiter mission to Mars (1998–2003)
Exploration: NASA Science. Retrieved January 2, 2019. "Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000". Solar System Exploration:
Nozomi_(spacecraft)
ESA/JAXA mission to study Mercury in orbit (2018–present)
in Mercury orbit, Mio will be operated by Sagamihara Space Operation Center using Usuda Deep Space Center's 64 m (210 ft) antenna located in Nagano, Japan
BepiColombo
European orbiter mission to Mars (2003–present)
Mars Express is a space exploration mission by the European Space Agency (ESA) exploring the planet Mars and its moons since 2003, and the first planetary
Mars_Express
Nasa 1960s lunar orbiter probe
monitor low-energy radiation, a VLF receiver for natural radio waves, a transponder to study electron density, and part of the flux-gate and search coil
Pioneer_P-30
Small radios carried to facilitate rescue in an emergency
use of the Cospas-Sarsat system and other measures, including radar transponders and hand-held marine VHF radios.[citation needed] There are many other
Survival_radio
Acoustic sensing method
signal or a predetermined one. Transponders can be used to remotely activate or recover subsea equipment. A sonar target is small relative to the sphere, centred
Sonar
Radio-frequency beacon used to locate airplanes, vessels, and persons in distress
indicator Transponder (aeronautics) Can be used as an emergency beacon of sorts by setting it to squawk 7700, the distress code Survival radio – Small radios
Emergency_locator_beacon
Retired NASA helicopter on the Mars 2020 mission
"Gazan behind Mars drone says visiting home is no small step". AP News. 29 April 2021. "A space engineer who brought us images of Mars confronts Earth's
Ingenuity_(helicopter)
Potentially hazardous near-Earth asteroid
future impacts. Schweickart also asked NASA to investigate whether a transponder should be placed on the asteroid to enable more accurate tracking of
99942_Apophis
NASA satellite of the Explorer program (2001-2010)
via a 2-GHz transponder providing a 667 kbit/s downlink to a 70 m (230 ft) Deep Space Network station. The spacecraft has two transponders, one a redundant
Wilkinson Microwave Anisotropy Probe
Wilkinson_Microwave_Anisotropy_Probe
1988 aircraft shootdown over the Strait of Hormuz
runway 21, it was directed by the Bandar Abbas tower to turn on its transponder and proceed over the Persian Gulf. The flight was assigned routinely
Iran_Air_Flight_655
German long-range ballistic missile
directed at Paris. Wreckage of combat V-2s occasionally contained the transponder for velocity and fuel cutoff. The painting of the operational V-2s was
V-2_rocket
Planned asteroid flyby mission by JAXA, using solar electric propulsion
is being developed by the Japanese space agency JAXA and will demonstrate advanced technologies for future deep space exploration. As of October 2024, DESTINY+
DESTINY+
American satellite-based radio navigation service
transmitters at known locations that would send signals to the satellite transponder in orbit. A fourth ground-based station, at an undetermined position
Global_Positioning_System
International satellite-aided search and rescue initiative
constellation of around 65 satellites orbiting the Earth which carry transponders and signal processors capable of locating an emergency beacon anywhere
International Cospas-Sarsat Programme
International_Cospas-Sarsat_Programme
Failed NASA orbiter mission to Mars (1992–1993)
6 meter boom to communicate with the Deep Space Network across the X-band using two GFP NASA X-band transponders (NXTs) and two GFP command detector units
Mars_Observer
"Ariane 6 launches Curium One: space for all". www.esa.int. Retrieved 22 June 2024. "Ariane 6 launches GRBBeta: small satellite, big astrophysics". www
List of spaceflight launches in July–December 2024
List_of_spaceflight_launches_in_July–December_2024
Geopolitical and economic crisis
crew to evacuate. Meanwhile, the Pola, which had earlier turned its AIS transponder off, managed to pass through the strait and deliver its cargo to the
2026_Strait_of_Hormuz_crisis
List of events on 9/11/2001
Flight 77 is hijacked above southern Ohio, turning to the southeast. The transponder is turned off by hijacker-pilot Hani Hanjour. 9:03:11: Flight 175 crashes
Timeline for the day of the September 11 attacks
Timeline_for_the_day_of_the_September_11_attacks
7th episode of the 5th season of Star Trek: Voyager
including for Star Trek: The Next Generation (1987-1994), Star Trek: Deep Space Nine (1993-1999), Star Trek: Voyager, and Enterprise. Overall he directed
Infinite Regress (Star Trek: Voyager)
Infinite_Regress_(Star_Trek:_Voyager)
Nanosatellite launched in 2022
2023). "Deep space smallsats face big challenges". SpaceNews. Retrieved 29 May 2023. "NASA - Lunar IceCube to Take on Big Mission From Small Package"
Lunar_IceCube
to fly at the same altitude in opposite directions, and the Legacy's transponder was switched off, making both aircraft's traffic collision avoidance
List_of_Mayday_episodes
Reservoir in Utah and Arizona, United States
community. A substantial number of vessels on the lake do not have AIS transponders as there currently[when?] are no mandatory requirements for AIS usage
Lake_Powell
Mars radio science experiment
X band radio transponder (8 GHz) and transmitter inside the lander, where electronics can be shielded from the harsh conditions of space. Although the
Rotation and Interior Structure Experiment
Rotation_and_Interior_Structure_Experiment
of Star Trek characters A–F • N–S • T–Z List of recurring Star Trek: Deep Space Nine characters • Enterprise • The Next Generation • The Original Series •
List of Star Trek characters (G–M)
List_of_Star_Trek_characters_(G–M)
Circular orbit above Earth's Equator and following the direction of Earth's rotation
and once they run out of thruster fuel they are generally retired. The transponders and other onboard systems often outlive the thruster fuel and by allowing
Geostationary_orbit
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