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| GA-ASI Lynx Block 20A Radar Antenna |
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| USAF MQ-9 Reaper UAV by GA-ASI |
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| Polar Reformatting for ISAR Imaging - U.S. Naval Research Laboratory |
The U.S. Naval Research Laboratory(NRL) Radar Division has teamed with San Diego-based General
Atomics Aeronautical Systems Inc. (GA-ASI) to integrate maritime
mode inverse synthetic aperture radar (maritime-ISAR) imaging capability with
GA-ASI’s Lynx Multi-Mode Radar deployed on its Unmanned Aerial Systems (UAS).
Intelligence, Surveillance and
Reconnaissance (ISR) communities around the world are exploring ways in which
different services can collaborate on naval missions. These communities
envision UAS capabilities supporting joint warfighter missions over land, and
littoral and blue water regions. To achieve this, GA-ASI Mission Systems has
expressed interest in adding an ISAR mode to the Lynx Multi-Mode Radar, a
standard payload for the USAF MQ-9 Reaper and Predator XP systems.
“Because ships and small watercraft
at sea are usually in motion — having both forward velocity and other linear
and angular motions, for example, pitch and roll and heave and sway — this
creates a problem for typical ISAR platforms,” said Thomas Pizzillo, head, NRL
Radar Analysis Branch. “The addition of a maritime-ISAR mode to the General
Atomics Lynx radar, as a software only upgrade, is the most cost effective
alternative to introduce this capability to the MQ-9 fleet.”
Synthetic Aperture Radar (SAR) is a
radar imaging method using multiple pulses transmitted from a moving platform.
The received signals are combined to form a high quality two-dimensional (2D)
image of the ground-terrain of interest. Classical SAR algorithms assume the
target scene (background) is stationary and any motion in the scene shows up as
a smear or streak in the image. ISAR algorithms assume the target itself is
moving, and through a set of complex algorithms, calculates enhanced angular or
cross-range resolution by analyzing subtle differences in range-rates caused by
the target motion. The net effect is to focus the image of a moving target
without smearing.
“Often with unknown velocities, both
linear and angular, it is a much more difficult problem because the motions are
not known as in typical ISAR,” Pizzillo says. “NRL has successfully adapted the
necessary changes to ISAR image formation in which the rotational motion of the
target is not known beforehand. This provides the end-user with an imaging
software tool that can produce high-quality imagery in conditions with
significantly complex target motion.”
Related/Background:
- Advanced Synthetic Aperture Radar Imaging and Feature Analysis
- An Introduction to the Functionality of the ISAR Radar
- spendergast: AF awards GA-ASI $23M for 72 Lynx SAR Block 20A kits for MQ-9
- spendergast: Reaper deploys live weapons on maritime training target
- spendergast: GA-ASI Lynx Radar supports U.S. Navy SPS-JHSV 14 mission
- Effort underway to improve ISR capabilities of USAF drones - UPI.com
- ONR looks to make surveillance radar more motion-sensitive -- Defense Systems
- x
Synthetic
Aperture Radar (SAR) is a radar imaging method using multiple pulses
transmitted from a moving platform. The received signals are combined to
form a high quality two-dimensional (2D) image of the ground-terrain of
interest. Classical SAR algorithms assume the target scene (background)
is stationary and any motion in the scene shows up as a smear or streak
in the image. ISAR algorithms assume the target itself is moving, and
through a set of complex algorithms, calculates enhanced angular or
cross-range resolution by analyzing subtle differences in range-rates
caused by the target motion. The net effect is to focus the image of a
moving target without smearing.
“Often with unknown velocities, both linear and angular, it is a much more difficult problem because the motions are not known as in typical ISAR,” Pizzillo says. “NRL has successfully adapted the necessary changes to ISAR image formation in which the rotational motion of the target is not known beforehand. This provides the end-user with an imaging software tool that can produce high-quality imagery in conditions with significantly complex target motion.”
- See more at: http://www.nrl.navy.mil/media/news-releases/2016/NRL-Invokes-Cost-Effective-Approach-to-Improve-Joint-ISR-Missions#sthash.EJyT6LbF.dpuf
“Often with unknown velocities, both linear and angular, it is a much more difficult problem because the motions are not known as in typical ISAR,” Pizzillo says. “NRL has successfully adapted the necessary changes to ISAR image formation in which the rotational motion of the target is not known beforehand. This provides the end-user with an imaging software tool that can produce high-quality imagery in conditions with significantly complex target motion.”
- See more at: http://www.nrl.navy.mil/media/news-releases/2016/NRL-Invokes-Cost-Effective-Approach-to-Improve-Joint-ISR-Missions#sthash.EJyT6LbF.dpuf
The U.S. Naval Research Laboratory (NRL) Radar Division has teamed with San Diego-based General Atomics Aeronautical Systems Inc.
(GA-ASI) to integrate maritime mode inverse synthetic aperture radar
(maritime-ISAR) imaging capability with GA-ASI’s Lynx Multi-Mode Radar
deployed on its Unmanned Aerial Systems (UAS).
Developed for the U.S. Air Force (USAF) through funding by General
Atomics Aeronautical Systems Inc. (GA-ASI), the MQ-9 unmanned aerial
vehicle (UAV) is designed to execute time-sensitive targets with
persistence and precision, and destroy or disable those targets. To
expand on its mission and improve joint-service ISR capability, GA-ASI
has teamed with the U.S. Naval Research Laboratory to implement an
Inverse Synthetic Aperture Radar (ISAR) imaging capability in the
GA-ASI’s Lynx Multi Mode Radar currently deployed on UASAF MQ-9 UAVs.
(Courtesy U.S. Air Force/Lt. Col. Leslie Pratt)
Intelligence, Surveillance and Reconnaissance (ISR) communities
around the world are exploring ways in which different services can
collaborate on naval missions. These communities envision UAS
capabilities supporting joint warfighter missions over land, and
littoral and blue water regions. To achieve this, GA-ASI Mission Systems
has expressed interest in adding an ISAR mode to the Lynx Multi-Mode
Radar, a standard payload for the USAF MQ-9 Reaper and Predator XP
systems.
“Because ships and small watercraft at sea are usually in motion — having both forward velocity and other linear and angular motions, for example, pitch and roll and heave and sway — this creates a problem for typical ISAR platforms,” said Thomas Pizzillo, head, NRL Radar Analysis Branch. “The addition of a maritime-ISAR mode to the General Atomics Lynx radar, as a software only upgrade, is the most cost effective alternative to introduce this capability to the MQ-9 fleet.”
Synthetic Aperture Radar (SAR) is a radar imaging method using multiple pulses transmitted from a moving platform. The received signals are combined to form a high quality two-dimensional (2D) image of the ground-terrain of interest. Classical SAR algorithms assume the target scene (background) is stationary and any motion in the scene shows up as a smear or streak in the image. ISAR algorithms assume the target itself is moving, and through a set of complex algorithms, calculates enhanced angular or cross-range resolution by analyzing subtle differences in range-rates caused by the target motion. The net effect is to focus the image of a moving target without smearing.
- See more at: http://www.nrl.navy.mil/media/news-releases/2016/NRL-Invokes-Cost-Effective-Approach-to-Improve-Joint-ISR-Missions#sthash.EJyT6LbF.dpuf
Developed for the U.S. Air Force (USAF) through funding by General
Atomics Aeronautical Systems Inc. (GA-ASI), the MQ-9 unmanned aerial
vehicle (UAV) is designed to execute time-sensitive targets with
persistence and precision, and destroy or disable those targets. To
expand on its mission and improve joint-service ISR capability, GA-ASI
has teamed with the U.S. Naval Research Laboratory to implement an
Inverse Synthetic Aperture Radar (ISAR) imaging capability in the
GA-ASI’s Lynx Multi Mode Radar currently deployed on UASAF MQ-9 UAVs.
(Courtesy U.S. Air Force/Lt. Col. Leslie Pratt)
Intelligence, Surveillance and Reconnaissance (ISR) communities
around the world are exploring ways in which different services can
collaborate on naval missions. These communities envision UAS
capabilities supporting joint warfighter missions over land, and
littoral and blue water regions. To achieve this, GA-ASI Mission Systems
has expressed interest in adding an ISAR mode to the Lynx Multi-Mode
Radar, a standard payload for the USAF MQ-9 Reaper and Predator XP
systems.“Because ships and small watercraft at sea are usually in motion — having both forward velocity and other linear and angular motions, for example, pitch and roll and heave and sway — this creates a problem for typical ISAR platforms,” said Thomas Pizzillo, head, NRL Radar Analysis Branch. “The addition of a maritime-ISAR mode to the General Atomics Lynx radar, as a software only upgrade, is the most cost effective alternative to introduce this capability to the MQ-9 fleet.”
Synthetic Aperture Radar (SAR) is a radar imaging method using multiple pulses transmitted from a moving platform. The received signals are combined to form a high quality two-dimensional (2D) image of the ground-terrain of interest. Classical SAR algorithms assume the target scene (background) is stationary and any motion in the scene shows up as a smear or streak in the image. ISAR algorithms assume the target itself is moving, and through a set of complex algorithms, calculates enhanced angular or cross-range resolution by analyzing subtle differences in range-rates caused by the target motion. The net effect is to focus the image of a moving target without smearing.
- See more at: http://www.nrl.navy.mil/media/news-releases/2016/NRL-Invokes-Cost-Effective-Approach-to-Improve-Joint-ISR-Missions#sthash.EJyT6LbF.dpuf
The U.S. Naval Research Laboratory (NRL) Radar Division has teamed with San Diego-based General Atomics Aeronautical Systems Inc.
(GA-ASI) to integrate maritime mode inverse synthetic aperture radar
(maritime-ISAR) imaging capability with GA-ASI’s Lynx Multi-Mode Radar
deployed on its Unmanned Aerial Systems (UAS).
Developed for the U.S. Air Force (USAF) through funding by General
Atomics Aeronautical Systems Inc. (GA-ASI), the MQ-9 unmanned aerial
vehicle (UAV) is designed to execute time-sensitive targets with
persistence and precision, and destroy or disable those targets. To
expand on its mission and improve joint-service ISR capability, GA-ASI
has teamed with the U.S. Naval Research Laboratory to implement an
Inverse Synthetic Aperture Radar (ISAR) imaging capability in the
GA-ASI’s Lynx Multi Mode Radar currently deployed on UASAF MQ-9 UAVs.
(Courtesy U.S. Air Force/Lt. Col. Leslie Pratt)
Intelligence, Surveillance and Reconnaissance (ISR) communities
around the world are exploring ways in which different services can
collaborate on naval missions. These communities envision UAS
capabilities supporting joint warfighter missions over land, and
littoral and blue water regions. To achieve this, GA-ASI Mission Systems
has expressed interest in adding an ISAR mode to the Lynx Multi-Mode
Radar, a standard payload for the USAF MQ-9 Reaper and Predator XP
systems.
“Because ships and small watercraft at sea are usually in motion — having both forward velocity and other linear and angular motions, for example, pitch and roll and heave and sway — this creates a problem for typical ISAR platforms,” said Thomas Pizzillo, head, NRL Radar Analysis Branch. “The addition of a maritime-ISAR mode to the General Atomics Lynx radar, as a software only upgrade, is the most cost effective alternative to introduce this capability to the MQ-9 fleet.”
Synthetic Aperture Radar (SAR) is a radar imaging method using multiple pulses transmitted from a moving platform. The received signals are combined to form a high quality two-dimensional (2D) image of the ground-terrain of interest. Classical SAR algorithms assume the target scene (background) is stationary and any motion in the scene shows up as a smear or streak in the image. ISAR algorithms assume the target itself is moving, and through a set of complex algorithms, calculates enhanced angular or cross-range resolution by analyzing subtle differences in range-rates caused by the target motion. The net effect is to focus the image of a moving target without smearing.
- See more at: http://www.nrl.navy.mil/media/news-releases/2016/NRL-Invokes-Cost-Effective-Approach-to-Improve-Joint-ISR-Missions#sthash.EJyT6LbF.dpuf
Developed for the U.S. Air Force (USAF) through funding by General
Atomics Aeronautical Systems Inc. (GA-ASI), the MQ-9 unmanned aerial
vehicle (UAV) is designed to execute time-sensitive targets with
persistence and precision, and destroy or disable those targets. To
expand on its mission and improve joint-service ISR capability, GA-ASI
has teamed with the U.S. Naval Research Laboratory to implement an
Inverse Synthetic Aperture Radar (ISAR) imaging capability in the
GA-ASI’s Lynx Multi Mode Radar currently deployed on UASAF MQ-9 UAVs.
(Courtesy U.S. Air Force/Lt. Col. Leslie Pratt)
Intelligence, Surveillance and Reconnaissance (ISR) communities
around the world are exploring ways in which different services can
collaborate on naval missions. These communities envision UAS
capabilities supporting joint warfighter missions over land, and
littoral and blue water regions. To achieve this, GA-ASI Mission Systems
has expressed interest in adding an ISAR mode to the Lynx Multi-Mode
Radar, a standard payload for the USAF MQ-9 Reaper and Predator XP
systems.“Because ships and small watercraft at sea are usually in motion — having both forward velocity and other linear and angular motions, for example, pitch and roll and heave and sway — this creates a problem for typical ISAR platforms,” said Thomas Pizzillo, head, NRL Radar Analysis Branch. “The addition of a maritime-ISAR mode to the General Atomics Lynx radar, as a software only upgrade, is the most cost effective alternative to introduce this capability to the MQ-9 fleet.”
Synthetic Aperture Radar (SAR) is a radar imaging method using multiple pulses transmitted from a moving platform. The received signals are combined to form a high quality two-dimensional (2D) image of the ground-terrain of interest. Classical SAR algorithms assume the target scene (background) is stationary and any motion in the scene shows up as a smear or streak in the image. ISAR algorithms assume the target itself is moving, and through a set of complex algorithms, calculates enhanced angular or cross-range resolution by analyzing subtle differences in range-rates caused by the target motion. The net effect is to focus the image of a moving target without smearing.
- See more at: http://www.nrl.navy.mil/media/news-releases/2016/NRL-Invokes-Cost-Effective-Approach-to-Improve-Joint-ISR-Missions#sthash.EJyT6LbF.dpuf
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