pshamim said:
How about the APG-68(V)9 radar on new PAF F-16s. It is considered to have the SAR capability with a 2-foot point target response. Is that true?
Here is something from [SIZE=-1]
northropgrumman.com[/SIZE]:
AN/APG-68(V)9 Significantly Enhances the Aircraft’s Combat Capability
The F-16, the choice of 24 countries, remains the world’s most sought-after fighter. More than 4,000 aircraft have been delivered, and hundreds more are currently on order for seven foreign nations. Production is expected to continue beyond 2010. Major upgrades are being incorporated into all versions to keep the fleet modern and supportable over the aircraft’s long service life.
Latest Variant Represents a Substantial Leap
Northrop Grumman has been supplying the fire control radar for the F-16 since it first rolled off the Lockheed Martin production line in 1976. Changes incorporated into the (V)9 variant are considered more significant than all previous upgrades to the APG-68 combined, and substantially improve the aircraft’s performance in both air-to-air and air-to-ground operations.
High-Resolution Ground-Mapping for All-Weather Precision Strike
The new high-resolution synthetic aperture radar (SAR) mode provides a significant improvement (2-foot resolution) to the ground-mapping capability of the F-16 and offers the pilot 24-hour, all-weather precision strike. Besides the SAR, the (V)9 offers a 33 percent gain in air-to-air detection range plus improved tracking performance, system growth potential, and supportability. Application of advanced processing techniques enhances the radar’s ability to operate in dense electromagnetic environments and resist jamming.
In the Situation Awareness mode (Search While Track), the (V)9 can track four targets as compared to its predecessor’s two. It provides a larger search volume and improved tracking performance in Track While Scan mode.
COTS Technology Boosts Computer Capacity, Reliability
The new radar takes advantage of current commercial off-the-shelf (COTS) technology, both in hardware and software, providing a fivefold increase in processing speed and a tenfold gain in memory compared to the previous APG-68 production version. In addition to these enhancements, the capacity of the new processors provides large growth potential, and other (V)9 advances are expected to provide a 50 percent increase in radar reliability, to nearly 400 hours mean time between failures.
Retrofit Flexibility Allows Commonality Throughout Fleet
An upgrade retrofit kit is available that brings earlier APG-68 versions up to the (V)9 standard. Technicians can install it on the flight line in approximately two days, and it fits in existing radar compartments. The kit includes a new modular receiver/exciter, common radar processor, modified dual-mode transmitter, modified antenna, and interface software that adapts to computers on Block 20 through Block 50 aircraft.
And from Defense-Update.com:
The Israeli Soufa F-16I, and Hellenic F-16 Block 52s are equipped with the latest version of Northrop Grumman APG-68 radar, the (V)9 multimode fire control radar that offers improved detection range and resolution. Only the Block 60 aircraft, destined for the UAE, are to be equipped with a more advanced version – the Active Electronically Scanned Array (AESA) radar. Initially, the Israelis favored the local Elta EL/M-2032 fire control radar originally developed for the IAI Lavi, but encountered financial and political obstacles. The IAF decided to use an improved model of the F-16 radar, and was involved in the specifications definition phase of the new version. It was later been selected by most of the latest acquisitions – by Poland and Greece. The new version uses new, Commercial Off The Shelf (COTS) technology that provided faster processors that provide increased throughput, with x5 faster processing speed and x10 growth in memory capacity over the current version. With the powerful processing capability, the new system has a high resistance to electromagnetic interference and countermeasures and future growth potential. The system offers new and improved capabilities in both air/air and air/ground modes, primarily in the operation at long range (BVR) and target rich airspace. The APG-68(V)9 offers 30 percent increase in detection range, improved search-while-track mode (four vs. two tracked targets) and larger search volume and improved track while scan performance. Its single target track performance has also been improved.
On air/ground missions, the new radar becomes an effective sensor, utilizing its high-resolution synthetic aperture radar mode, which allows the pilot to locate and recognize tactical ground targets from considerable distances. Although previous radars had some Synthetic Aperture Radar (SAR) capabilities, the new version generates imagery-class (2 feet resolution) high resolutions pictures, comparable to pictures delivered by the most modern commercial satellites. These pictures can be acquired from very long range, at all weather conditions and provide an effective, real-time source for the targeting of long range, precision guided weapons. The radar also has increased detection range in sea surveillance mode, and enhanced ground moving target identification and mappinc capability. The radar features an inertial measurement unit that improves dynamic tracking performance and provides an auto-boresight capability, which increases accuracy
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