Τρίτη 4 Δεκεμβρίου 2012

Goodbye GPS, Hello NAVSOP

BAE Systems has unveiled its latest research on an advanced positioning system that exploits existing transmissions such as Wi-Fi, TV, radio and mobile phone signals, to calculate the user’s location to within a few metres. 

Military platforms commonly use Global Positioning Systems (GPS) to find their position and navigate. GPS rely upon a specific and relatively weak satellite signal that is vulnerable to disruption . Known as Navigation via Signals of Opportunity (NAVSOP), BAE Systems’ new system is able to calculate its position by making use of the hundreds of different signals that are all around us.

By exploiting such a wide range of signals, NAVSOP is resistant to hostile interference such as jamming (a particular weakness of GPS) and spoofing, where a bogus signal tricks a device into misidentifying its location. The new system can learn from signals that are initially unidentified to build an ever more accurate and reliable fix on its location. Even the signals from GPS jammers can be exploited by the device to aid navigation under certain conditions. 
The real beauty of NAVSOP is that the infrastructure required to make it work is already in place. There is no need to build costly networks of transmitters and the hardware behind the system is already commercially available. Another benefit is that it can be integrated into existing positioning devices to provide superior performance to GPS.

A major advantage of the system is its ability to function in places where GPS is unable to reach, such as dense urban areas and deep inside buildings. It is also able to work in the most remote parts of the world, such as the Arctic, by picking up signals that include Low-Earth-Orbit satellites and other civilian signals.
From aiding soldiers operating in remote or dense urban areas to providing improved security for Unmanned Aerial Vehicles (UAVs), which could face attempts to disrupt their guidance systems, NAVSOP has a wide range of potential military applications. 
Among those pioneering this area of research is Dr Ramsey Faragher, a Principal Scientist from BAE Systems Advanced Technology Centre, who recently led a team that received a prestigious award from the Institute of Navigation for a ground-breaking paper on how aspects of the technology work indoors. 

Dr Faragher said: “The potential applications of this technology are already generating huge excitement in both civilian and military circles. This research is a great example of BAE Systems working closely with potential customers to not only improve the performance of existing technology, but also tackle their weaknesses head on and find innovative ways to reduce or eliminate them.” 

James Baker, Managing Director at BAE Systems Advanced Technology Centre, said: “At a time when the need to be innovative and resourceful is more important than ever, this capability represents truly outside-the-box thinking by providing a cost effective system with a wide variety of different applications. This technology is a real game changer when it comes to navigation, which builds upon the rich heritage that both BAE Systems and the UK have in radio engineering.”
This research is generating interest in both defence and civilian domains where its uses could include helping fire and rescue services find their way through smoke filled buildings and enhancing the safety of lone workers and security staff.

Source

Δευτέρα 3 Δεκεμβρίου 2012

Pelvic Protection System


Pelvic Protection System

The introduction of the Pelvic Protection System provides a valuable new level of protection for the dismounted soldier. Dismounted Soldiers who encountered buried mines or improvised explosive devises (IEDs) were suffering significant injuries, not only to their feet and lower legs, but to their upper thighs and groin areas. These resulted in above the knee and even high hip amputations.
 
“There were a lot of significant injuries, and very traumatic injuries occurring to Soldiers in the lower extremity area,” said LTC Frank Lozano, Product Manager Soldier Protective Equipment. “It’s very traumatic, very heartbreaking, when Soldiers go through those types of events, and they are very young, and then they come home and they are not able to have children.” 

The Army developed the Pelvic Protection System. The system includes two layers of protection for Soldiers, including the Tier I protective under-garment, called the “PUG,” and the Tier II protective outer-garment, called the “POG.” The PUG is worn under a Soldier’s ACU pants in place of, or over the Soldier’s underwear. 

It resembles typical bicycle shorts, and is made out of a breathable, moisture-wicking material on the outer thighs with a tougher Kevlar mesh to provide added protection to the inner thighs and the femoral artery. The groin also receives additional protection. 

There are other benefits to wearing the PUGs. The material stops infectious debris such as dirt and manure from penetrating the skin when the Soldier is hit by an IED explosion. Even after many medical procedures some of this material can remain and cause infections that result in further amputations. 

The outer garment, the POG, provides even more protection for Soldiers, and is made of ballistic material similar to the soft panels in the improved outer tactical vest (IOTV). 

LTC Lozano recommends that Soldiers wear both garments. The Tier II has more ballistic protection but is a little more rigid. The undergarment is not only softer, it helps prevent the POG from chafing the Soldier. 

The Army first fielded the pelvic protection system in June 2011. To date, the POGs and PUGs have been fielded to approximately 15,000 Soldiers. The typical issue includes three PUGs and one POG. Fielding is happening now for Soldiers in theater and for Soldiers stateside.

Κυριακή 2 Δεκεμβρίου 2012

Daytime Gunships Galore

The U.S. Air Force is equipping its four engine AC-130 gunships with more powerful sensors and missiles that enable these four-engine propeller driven aircraft to fly high enough (6,500 meters/20,000 feet) to avoid ground fire and operate during the day. This is a major change in the way these gunships have long operated. These gunships are owned by SOCOM (Special Operations Command) although they support all combat troops, not just the Special Forces and SEALs. While SOCOM operators prefer to operate at night, they are often out during daylight, when the presence of a gunship overhead can be a real lifesaver. This use of missiles, instead of cannon, is a recent development and the success of this technique has changed the basic design of these gunships and how they are used. 

The current AC-130H gunship (nicknamed Spooky) is a 69 ton, four engine aircraft originally armed with two 20mm machine-guns, a 40mm autocannon, and a 105mm howitzer. While the aircraft can stay in the air for six hours (or more, if it refuels in the air), what really makes a difference is how well the weapons operate. Flying low (often under 10,000 feet) and at night, the gunship relies on night vision devices and well trained gunners to take out targets that are giving the troops on the ground a hard time. Four decades of continuous improvements have made the gunships increasingly lethal. But the troops have found that missiles can be just as effective as cannon fire and the AC-130 can launch missiles from higher altitudes (beyond the range of enemy anti-aircraft guns or missiles). 

The recently ordered AC-130J gunships will be equipped with more powerful sensors, armed with a single 30mm autocannon, and multiple launchers for Viper Strike and SDB glide bombs, as well as Hellfire and Griffin guided missiles. Viper Strike is a 90cm (36 inch) long unpowered glider. The 130mm diameter (with the wings folded) weapon weighs 20 kg (44 pounds). Because the Viper Strike comes straight down, it is better suited for urban warfare. Its warhead weighs only 1.8 kg (four pounds) and less than half of that is explosives. This means less damage to nearby civilians but still powerful and accurate enough to destroy its target. A laser designator makes the Viper Strike accurate enough to hit an automobile or a foxhole. 

The Griffin is a 15.6 kg (34.5 pound) guided missile with a 5.9 kg (13 pound) warhead which is larger than that carried by the larger (47 kg) Hellfire missile. To achieve this Griffin has a shorter range (4 kilometers), which is adequate for a gunship, which is designed to go after targets just below it, not far away. 

Hellfire weighs 48.2 kg (106 pounds), carries a 9 kg (20 pound) warhead, and has a range of 8,000 meters. The 130 kg (285 pound) Small Diameter Bomb (SDB, also known as the GBU-39/B) has a shape which is more like that of a missile than a bomb (nearly two meters, as in 70 inches, long and 190mm in diameter), with the guidance system built in. The smaller blast from the SDB resulted in fewer civilian casualties. The SDB carries only 17 kg (38 pounds) of explosives and can be dropped from high altitude, using laser guidance to hit very small targets below. 

Existing gunships are using all these missiles already. Equipping existing gunships to carry and fire all these missiles is neither difficult nor expensive. U.S. SOCOM (Special Operations Command) has also adopted a U.S. Marine Corps idea to provide an "instant gunship" system, which enables weapons and sensors to be quickly rolled into a C-130 transport and hooked up. This takes a few hours and turns the C-130 into a gunship armed with a 30mm autocannon and Viper Strike and Griffin missiles. 

Because of their vulnerability to ground fire, the AC-130s have long only operated at night. The last time an AC-130 was lost was at Khafji, Saudi Arabia during the 1991 Persian Gulf War. The aircraft was leaving the combat zone at sunrise and was visible to Iraqi gunners in the area. But in the last two years, more and more AC-130s have been out in daylight, flying high enough to avoid hostile fire and using their powerful sensors to get a close look at what’s down there and use their missiles on anything that looks hostile.

Σάββατο 1 Δεκεμβρίου 2012

Special Operations Command Seeks Bigger Role in Conflict Prevention



U.S. special operations forces are the nation’s most celebrated terrorist killers. But they also have underutilized skills that could help prevent wars, officials said. 

The war against al-Qaida and other Islamic extremist groups has become more complex since the 9/11 attacks, said Army Lt. Gen. John Mulholland, deputy commander of U.S. Special Operations Command. Navy SEAL raids and precision drone strikes alone will not be enough to defeat these enemies, he said.

“We have known for a long time that we are not going to kill our way to victory,” Mulholland said Nov. 28 at a Defense Strategies Institute conference, in Alexandria, Va.

What is needed, he said, are “preemptive efforts before the fight starts.”

Counterterrorism is “much broader than direct action,” he said. SOCOM Commander Adm. William McRaven is a strong believer in indirect methods of fighting terrorist groups, Mulholland said. 

McRaven would like to see special operations forces take on a larger role in the training of foreign allies — an activity known in military-speak as “building partner capacity.” Strengthening the internal security of friendly countries where al-Qaida and its affiliates are recruiting members would help counter these groups’ influence, and possibly prevent a wider conflict, SOCOM leaders believe. 

Army Special Forces, or Green Berets, have been deployed in these capacity-building roles for decades, but a more sustained effort is needed, said Mulholland. SOCOM’s skills and resources should help the United States stay “to the left of problems,” he said, instead of having to intervene later and put U.S. military forces in harm’s way.

Since McRaven took charge of SOCOM in 2011, he has sought to expand the command’s authorities in several areas, one of which is building partners’ capacity. The current process is “suboptimal,” Mulholland said, because it is rooted in the Cold War, when the world was bipolar. “We don’t believe it gives us what we need today to build capacity in areas of the world that matter,” he said. SOCOM would like more flexibility to establish long-term relationships with partners that are facing threats from al-Qaida and its affiliates, he said. “We lack the ability to deliver a program to a country that needs help. We’re looking for authorities to get at that challenge more meaningfully.”

Africa, particularly, is an area “where we should invest,” he said. Weak internal security in several African nations is raising concerns about these countries becoming safe havens for terrorist groups, Mulholland noted. A case in point is Mali, where al-Qaida's North African wing has taken over significant portions of the country.

SOCOM sees Mali as a cautionary tale. “We know what needs to be done with partners,” said Mulholland. “But we don’t have the tools.” 

SOCOM’s request for broader powers to fight terrorism has stirred controversy inside the Pentagon and on Capitol Hill. It was the topic of a House Armed Services Committee emerging threats subcommittee hearing in July. Linda Robinson, a senior fellow at the Council on Foreign Relations and an expert on special operations forces, told the panel that SOCOM’s proposal had merit.

SOF units that currently are training partner militaries are “not properly resourced, organized or supported to fully maximize their potential,” she said. “Successful employment of the indirect approach requires both proactive involvement and patience for the effort to produce results.”

SOCOM officials recognize that Congress tends to be skeptical of open-ended efforts, and that their plan might be a tough sell.

“It requires placing SOF teams out in troubled regions for extended periods so they can gain familiarity, knowledge and relationships and then begin to execute solutions with the resident partners,” said Robinson. “This runs counter to a common tendency to wait until crises are full blown and action is imperative.”

She cited Colombia and The Philippines as examples of successful preemptive actions by SOF. In Colombia, more than a decade of “sustained, small footprint advisory assistance helped that country to greatly weaken the narco-terrorist insurgency known as the FARC,” Robinson said. “The Philippines is another case worthy of study to build a template for successful application of the indirect approach and achievement of enduring results.”

SOCOM’s desire for enhanced authority to deploy training teams in vulnerable countries is only one piece of a sweeping transformation that McRaven is seeking in how SOF units are employed worldwide.

The admiral raised hackles in Washington last year when he asked for direct control over the so-called theater special operations commands. TSOCs currently report to the geographic combatant commanders. But McRaven has argued that the TSOCs should be overseen directly by SOCOM to ensure they are sufficiently staffed and resourced to provide meaningful help to regional commanders. 

Robinson said TSOCs have “chronically lacked adequate staff and resources” and are considered “career-ending assignments.” TSOCs should, instead, be the place where SOF skills and regional expertise should come together, said Robinson.

McRaven has proposed that TSOCs become sub-unified commands of U.S. SOCOM. He has argued that this is not a power grab by the command, but rather an attempt to better support geographic commanders. “It does create for the first time a coherent connection between TSOC and mother SOCOM,” Mulholland said. He insisted that McRaven’s plan will allow SOF to respond to crises in a timely manner. When the U.S. Consulate in Benghazi was attacked Sept. 11, a SOF company assigned to U.S. Africa Command — known as “cinc in-extremis” force — was located at the U.S. Naval Air Station in Sigonella, Italy. 

“Those forces worked as advertised. They were in position,” Mulholland said. But they were physically too far from the action to be able to intervene quickly enough. Mulholland declined to discuss the particulars of the events in Benghazi but he did suggest that if SOCOM were given more discretion to move forces around based on anticipated threats, SOF quick-reaction units could be far more effective. “To be relevant in this security environment, you have to be ahead of the crisis,” he said.

If a geographic commander needs SOF assistance today, he has to submit a request for forces to the Joint Staff at the Pentagon. “That takes time,” said Mulholland. McRaven wants to be able to short-circuit that process and provide immediate help. If necessary, he would move forces horizontally from one theater to another.

Mulholland noted that only 6 percent of SOF are assigned to theaters. The majority of the 66,000-strong command is based in the United States and reports directly to SOCOM headquarters, in Tampa, Fla.

“Today McRaven doesn’t have a formal relationship with TSOCs. It’s bizarre,” Mulholland said.

McRaven’s proposed reorganization requires a revision to the Unified Command Plan. The president must approve any changes to the UCP, which was last updated in April 2011. "The current review process is still underway, but I don't have an estimate for its completion," Pentagon spokesman Lt. Col. James O. Gregory told National Defense.

“We think it’s going well,” said Mulholland. But he cautioned against counting chickens before they hatch. “We think it will be successful. COCOMs [combatant commanders] support it.”

SOCOM is seeking expanded responsibilities at a time when the command is busier and bigger than ever. With 66,000 members — including both military personnel and civilians — SOCOM has doubled since 2001. Its budget of $10.5 billion is more than twice its 2001 inflation-adjusted budget of $4.2 billion.

“SOF operators have never been held in higher regard by our nation, by the public, by our international partners and, more importantly, by our adversaries,” said Garry Reid, principal deputy assistant secretary of defense for special operations and low-intensity conflict.

SOCOM will grow to 71,000 members by 2018, Reid told the Defense Strategies Institute conference. 

Reid endorsed McRaven’s plan to bolster theater-based forces. “We need to regain some regional specialization,” he said. Before 9/11, SOF were spread around the world. But during the past decade, 85 percent of SOF has been deployed in Iraq and Afghanistan, in support of U.S. Central Command. “That comes at a price,” said Reid. “We want to get back to understanding other areas and languages.”

Even as current wars wind down, the demand for SOF will no subside, said Reid. In addition to traditional SOF assignments, “there’s an increased appetite for SOF ‘liaisons’” at embassies and across U.S. and foreign government agencies, he said. “That’s a lot of 04s and 05s [field grade officers] that come out of the operational force,” said Reid. “We have a bulge of requirements.”