Spotted last eight months, according to the official version, the founder of al-Qaeda was, it seems, surrounded by spy satellites.

It is still early to know the underbelly of the operation that led to the execution of Osama bin Laden. Reports that his home in Abbottabad was spotted in August 2010 does not allow to query the time – eight months at a minimum – which separated the discovery of the raid on the compound of U.S. Navy commandos. From conversations with intelligence professionals, we tried to understand what current military computer technologies allow for surveillance of a building, people who live and those which – necessarily – go in and out.

For our stakeholders is evident: from human sources that could identify the house where lived an important character linked to al-Qaeda, all the technical means were used to place him under surveillance. “All means” when we think the U.S. is a lot! These are the first military observation satellites, with pictures showing details of a few inches in the best case. More generally about twenty centimeters. They go once a day over a period, they can shoot for two minutes. It is unclear how much equipment available to the National Reconnaissance Office (NRO), which manages the equipment, but their abilities are amazing today: for example, infrared imagery which they can identify with their heat human bodies in a house. Helpful to know how many people live there …

Drones and reconnaissance aircraft

Second element: the commercial satellite imaging. Their production is acquired by the massive U.S. trade agency, the National Geospatial-Intelligence Agency. The accuracy of these commercial images is lower than that of military production, but they increase the number of overflights. In September 2010, the NGA has awarded two contracts of ten years to two commercial companies, GeoEye and Digital Globe, for $ 7.3 billion (4.9 billion euros)! Objective: To have more pictures.

Third source: the photographic reconnaissance aircraft, especially the drones. You can bet that since August 2010, units of the CIA and U.S. military held deflected goals constantly on the home of bin Laden. Day and night …

Machines back in time

Then the analysts have peeled. The images of satellites, drones, aircraft also may have been passed to roping specialized software. Their abilities are astounding. Between a car she at Ben Laden? His route is rising … “If it was the end point was the starting point,” says a man of intelligence. It is possible to know where it comes from. And when it comes out of the residence, it will be followed relentlessly.

Since satellites are also an incredible journey back in time. An example? Abbottabad has been the victim of an earthquake in 2005. This city was then examined from every angle. Since Monday morning the pictures came out of some French military PC. Everything has jumped eyes of analysts: the first sod at Ben Laden, the construction of the building floor by floor, over the months … When the Americans knew where home was, they no longer had to drag its coordinates in the computer memory, become a machine to travel back in time. The plans have emerged. The CIA has built at least an identical building for training commandos.

Computer aid needed

But that’s not all: this house which you do not leave garbage, that does not use the phone, offer clues: “Everyone has a routine, just to find it. Do not leave their garbage, is a non-routine revealing, says an expert in image interpretation. There is something, when there is nothing. A good photo-interpreter goes beyond the geometry of an image. He plays with it like a virtuoso musician transposes a partition. If he knows that a man lives in a house and it has not come out once in four months, he can say that there will be a good chance that if one wants to catch him, he is now … ”

Computer aids are indispensable. They can help analyze buildings, analyzing the movement of people and crowds … (Entering, exiting, which remains around the building or traveling, outdoor rounds are conducted? Etc..) Verify the movement of vehicles, analyze the traffic in the area …  possibly expand the scope of observation … . For this specialist information technology applied to intelligence, “the image analysis software were very useful, but when it becomes stocky man returned to power. A fuzzy logic algorithm is very difficult to program. I am absolutely certain that in this case, Americans have been crazy human resources, the budget of this file has known no limits! ”

One explanation of the eight months between the first sighting of the house of Abbottabad (assuming that that date is good) and his attack lies in this comprehensive analysis of the behavior of its hosts, their network, their mode life. Two days after this intervention, it is far too early to know the Prolegomena …

This order is of an quantity of more than one.9 million bucks, in accordance to the costs list in the avionic. With a single floats current more than 50 products, Vietnam Airlines asserts to move about 9 millions of persons per yr. Air Nostrum orders 10 ATR 72 much more ten options business Air Nostrum ordered 10 regional airplanes of transportation ATR 72 far more 10 choices, introduced Tuesday the aeronautical builder for the parlor from the Bourget.

“ATR and the Spanish company Air Nostrum signed nowadays a contract for the acquire of 10 ATR mil-std-1553, and alternatives for 10 added devices”, released the builder, a Enterprise between the Italian Alenia Aeronautics and EADS. The deal is valued at about 425 millions of bucks although such as the selections. Avionic acquired an order closes of 24 copies of his regional civil airplane Super-jet hundred, through the rental agency of airplanes Uzbek Increasing, of the benefit list of 715 thousands of dollars, it introduced. currently has 122 orders close with the 1553 Super-jet, of which 48 for the only Uzbek firm, that already had ordered 24 copies in July 2008. The delivery of the devices should spread themselves among 2011 and 2013.

Friday a letter of intention in the Spanish organization Gadair with the obtain of a couple of products and an choice for a couple of arinc-429 extra ones. Monday, a letter of purpose of the Hungarian company Malev for 30 copies obtained already been announced. The Super-jet hundred is a local airplane having access to a capacity of 78 to 98 guests, in accordance towards the adjustments. His unitary cost catalog is offered as a great deal much less person how the 1 in the devices of its competitors, primarily the Brazilian and the Canadian Bomber. Two duplicates with the Super-jet a hundred are presently towards essay, which one particular is located in slideshow towards Bourget.

With all the assignment Super-jet one hundred. The very first 1 participates inside manufacture of the motors and also the second holds given that June 2007 a quarter of the capital of Municipal Aeroplanes, the corporation that markets the Super-jet. Cebu Pacific past an order for five Airbus A320. The Philippine airline firm Cebu Pacific passed an order closes for 5 regular mails Airbus A320, announced Tuesday the avionics for the parlor with the Bourget. The purchase goes up to 384.five thousands of dollars on the price list. Cebu Pacific received introduced in 3 years ago an buy of ten avionic Airbus A320, too as an alternative for 10 added equipment.

Airbus released The following friday requirements it corporation of an common airplane mail A320 Prestige to a non-public Asian not determined buyer; the initial a person to order this kind throw of higher matters-of-range from the area. The amount of the order has not been unveiled. The value catalog with the industrial version of l’A320 is of 84 large numbers of dollars, but his edition called “Prestige” understands extra installations, with obviously a telephone presentation space far more spaciest, a lot more than 96 m2 of emerge floor to formulate in accordance on the preferences of the customer, and with the “different tanks of energy resource for your global arrivals”.

Airbus specifies to have acquired at present orders for “more than 100 throws of matters of the family ACJ”, Airbus Corporate Jetliner, (A318 Elite, Airbus ACJ and A320 Prestige).<br> Aerospace foresees a 12 months 2009 files despite the turmoil.

The saudi Arabia engaged discussions with the Great Britain regarding to add other Eurofighter to the 72 copies of the ordered fighter jet recently, declare two sources close of the file.  Ryad equally started preliminary talks with Boeing concerning the other purchase F-15.  “The saudi Arabia did not again finalize its requirements done or decide if it was going to launch a call of offers or some to be anxious a single supplier”, declared the one of the sources.  The country accelerates his effort of rejuvenation of his floats fighter jets in a context of growing worries, linked to the Iran, concerning the security of the region of the Gulf, followed the sources.

The British BAE Systems, that coordinates the production of the Eurofighter Typhoon all just sold ones to the Saudi Arabia, as well as Boeing refused themselves to any commentary.

The consortium Eurofighter, that understands also EADS and Finmeccanica, equally refused to comment on information.  Wizz Air signs a protocol agreed for the purchase of 50 Airbus A320

The Hungarian company down with costs Air signed a protocol agreed to buy 50 average mails A320 European avionic Airbus.  The amount of the future transaction was not specified.  According to the prices catalog, she rises to 3.8 billion dollars, said the commercial director of Airbus, John Leahy.  Questioned on the moment where this mil-1553 agreed would transform itself in order closes, John Leahy replied:  “Very soon”, precise that there were again some questions to regulate.  Dyed Eastern confirms the purchase of 20 Airbus A320

The Chinese airline company Dyed Eastern announced the purchase of twenty Airbus A320, that are part of the 160 devices ordered by the China in 2007, according to 1553 Airbus.

In a stock market communique, the company indicates that the purchase agreement was signed Monday to Paris, where is held currently the aeronautical parlor of the Bourget.  Dyed Eastern Airlines asserts as as the amount of the order is inferior to the price catalog 2008 that “is of 9.917 billion yuans, almost 1.452 billion dollars”, without more of precision on the effectively suited sum.  These A320, deliverable between 2011 and 2013, aim to reply to the growth of the market of the aerial transportation in China and will optimize the network of internal lines of Dyed Eastern.  In 2007, to the occasion of the visit to Peking of the French president Nicolas Sarkozy, China had signed for the delivery by Airbus of 110 A320 and 50 of the family A330.

ARINC 429

The communication is one-way and for a communication bidirectionnelle between the systems, one uses two buses, an in every direction.  A bus ARINC 429 uses two sons to transmit a bipolar encodage with return to zero.  The words of 32 bits are separated by 4 bits time NULL, it does not there have therefore need of a 3rd wire for the clock signal.  The one-way used bus is called:  Digital Information Transfer System.  This is a twisted pair.  The bus ARINC 429 supporter two types of debit: a high-speed one of 100KBPS for the “high” given (1% of the data) and a weak varying debit between 12KBPS and 14.5 Kbps for the “low” given.

Level Liaison:  The data are transferred on the ARINC 429 buses series by words of 32 bits.  Every word is separated by an ‘inter-word holes’ of 4 bits (bit time).  We are here in the case of a liaison not at all to not at all, therefore the check system is also not at all to not at all.  Three protocols are defined in ARINC 429 for the numerical, discreet data or files.  The transfers of numerical or discreet data are carried out while using a field SAL (System Reference Label) unique to identify the contained data in every word.  The transfers of files of data are carried out by the protocol Bit oriented or Williamsburg.  In this protocol, the source initializes the communications while sending codes.

If a transfer Bit oriented is desired, the source will send the word code ‘ALO’.  If the receiver can receive the data, it replies with ‘ALR’.  In most of the cases, a message consists in a data word.  The label defines the type of data of the word.  The parity Bit allows verifying the validité of the transmission (while verifying that a bit did not lose itself).

By the simplicity of his topology and used protocols, this bus is of a very big reliability.  And as there is only a single transmitting one a pair of son, the ARINC 429 is well evidently deterministic.  But as the transmission and the reception do themselves on separated harbors, the number of son between the different systems of the airplane very student. in the embarked systems that cannot bear the material breakdowns, it is necessary to double the station master to avoid that a breakdown of this one does not provoke the rupture completes network, which considerably increases the cost.  Of more, this protocol uses a width of considerable band comparatively to the maximum capacity of the network.