Gravity is not the main obstacle for America’s space business. Government is

IN THE spring of 2006 Robert Bigelow needed to take a stand on a trip to Russia to keep a satellite off the floor. The stand was made of aluminium. It had a circular base and legs. It was, says the entrepreneur and head of Bigelow Aerospace in Nevada, “indistinguishable from a common coffee table”. Nonetheless, the American authorities told Mr Bigelow that this coffee table was part of a satellite assembly and so counted as a munition. During the trip it would have to be guarded by two security officers at all times.

Exporting technology has always presented a dilemma for America. The country leads the world in most technologies and some of these give it a military advantage. If export rules are too lax, foreign powers will be able to put American technology in their systems, or copy it. But if the rules are too tight, then it will stifle the industries that depend upon sales to create the next generation of technology.

It is a difficult balance to strike and critics charge that America has erred on the side of stifling. They claim that overly strict export controls have so damaged the space industry that America’s national security is now threatened by its dwindling leadership in space technology. The system, they complain, fails to distinguish between militarily sensitive hardware that should be controlled and widely available commercial technologies, such as lithium-ion batteries and solar cells. The zealous application of the export rules is the American space industry’s biggest handicap.

OnAir was chosen for A380 service, with the initial rollout--especially for international flights--using the 64 Kbps Inmarsat satellite offering, which is too paltry for anything but limited text communication. When the recently launched Pacific satellite is active--which may take up to a year--OnAir and Qantas can upgrade to the luxurious nearly 500 Kbps per channel service.

The head of OnAir is pushing some mighty serious horsehockey, however, when he says as quoted by Flightglobal that he "is confident that once the full service is up and running, passengers will be able to access the Internet 'in exactly the same way as they can on the ground.'" That may be the case in terms of access, but not in terms of cost. The cost will be enormously high unless OnAir has a magic deal with Inmarsat that's previously undisclosed. I suspect a per MB charge will be in effect that will discourage much use. Calls and texting could be carried over the same system, of course.

Qantas plans to continue to work with Aeromobile for domestic service, with calls and texting available, on their Boeing 767-300s and Airbus A330-200s, Flightglobal reports. Aeromobile has plans to launch a full Internet service later this year using cached and live content. [link via Fabio Zambelli]

OnAir has so far tested their calling/texting-only service on two aircraft--one operated by Air France, one by TAP Portugal--even though RyanAir announced plans that its planes would started being unwired with the service by late 2007. Still no word on that fleet progress.

Qantas will apparently launch cached Web browsing and limited Web email (probably through a proxy) along with instant messaging, with full Internet service coming "later in 2009." This is clearly due to a lack of satellite coverage that was just remediated a few weeks ago (see below). The first plane with limited service, a new A380, should be in flight 20-October-2008.

The Morning Herald seems to overstate the importance and scope of a complaint filed by the union representing American Airlines' flight attendants. The detailed coverage in the U.S. had more to do with the potential for issues, and likely attendants lack of interest in policing yet another media on the plane. Filtering doesn't work, the attendants probably already know, and this may just be a negotiating point with the airline.

On why Qantas is waiting until late 2009? This requires unwinding how OnAir gets its signal.

Aeromobile and OnAir both rely on Inmarsat satellites for their service. Both companies had several years ago staked their futures on the fourth-generation network Inmarsat was to inaugurate with three satellites that would use beamforming to allow precise delivery of nearly 500 Kbps per receiver, with hundreds or thousands of regions being able to be targeted from a single satellite. Inmarsat's third-gen network--don't confuse this with 3G cellular ground-based networks--can deliver about 64 Kbps per channel.

Now, unfortunately, Inmarsat was three years late on launching its trans-Pacific bird. While the company claims 85 percent coverage of the earth and 98 percent coverage of population, there's a big gap over the Pacific that also prevents them from having good overlap between the U.S. and Japan/China/Korea, as well as the southern Pacific, covering Australia. Since the biggest market for long-haul flights would likely be Australia, Japan, and China, traveling trans-Pacific or trans-hemispheric routes, that gap is rather large.

Aeromobile opted to build out a service, deployed only by Emirates airline as far as I can tell, that uses the 3G service since it was available, and most necessary equipment is already installed on most over-water planes. OnAir was waiting for 4G, which has necessitated a long wait, but allowed them to launch in Europe with a seemingly next-generation service. Given that OnAir is controlled by an airline-owned integration firm, SITA, and by Airbus, they're not going anywhere.

Inmarsat finally lofted its third satellite on Baikonur Cosmodrome in Kazakhstan on 19-August-2008, and the launch and separation was reported as successful. Previously, the company has needed up to a year to verify and deploy its 4G satellites. (You can read extremely close coverage of the launch at a Web site devoted to space enthusiasm.)

However, the dirty little secret about Inmarsat's BGAN is that it costs a fortune to heft bandwidth across it. Thus, in-flight broadband over BGAN, if it's ever available, is going to be changed on an extremely high per-MB rate. None of the providers want to say this. This is in contrast to Row 44 (and, once, Connexion by Boeing), which relies on leased Ku-band transponders where they can fix costs and they require high volumes to keep per-bit costs efffectively low.

OnAir's launch of calling on Air France's service involves paying a few euros per minute for calls, which might help you understand what data costs could ultimately run.

Jon used a desktop computer attached to a GPS satellite simulator to create a fake GPS signal. Portable GPS satellite simulators can fit in the trunk of a car, and are often used for testing. They are available as commercial off-the-shelf products. You can also rent them for less than $1K a week -- peanuts to anyone thinking of hijacking a cargo truck and selling stolen goods.

In his first experiments, Jon placed his desktop computer and GPS satellite simulator in the cab of his small truck, and powered them off an inverter. The VAT used a second truck as the victim cargo truck. "With this setup," Jon said, "we were able to spoof the GPS receiver from about 30 feet away. If our equipment could broadcast a stronger signal, or if we had purchased stronger signal amplifiers, we certainly could have spoofed over a greater distance."

During later experiments, Jon and the VAT were able to easily achieve much greater GPS spoofing ranges. They spoofed GPS signals at ranges over three quarters of a mile. "The farthest distance we achieved was 4586 feet, at Los Alamos," said Jon. "When you radiate an RF signal, you ideally want line of sight, but in this case we were walking around buildings and near power lines. We really had a lot of obstruction in the way. It surprised us." An attacker could drive within a half mile of the victim truck, and still override the truck's GPS signals.

Italian free space optics test hits 1.2 terabits per second (in Italian, Google translation): Researchers in Pisa, Italy, along with colleagues from two Japanese institutions, crossed 1.2 Tbps in a test. Free space optics typically uses infrared lasers, and can work over a distance of kilometers.

More Canadian Wi-Fi health fears: This time in an island in Montréal. One of the concerned citizens: "This is something that is really under the radar. People do not know that long-term health hazards are associated with wireless technology." They don't know that because all verifiable, repeatable, well-conducted, academic tests so far indicate that there's no such health hazard associated with EMF. The concerned folks are raising an alarm about Wi-Fi being broadcast island wide, but are not paying attention, obviously, to the AM/FM radio, satellite radio, cellular, cordless, and thousand other wireless uses that are bombarding them right now, often at far higher signal levels.

Wi-Fi in a tub: I'm not going to say anything more.

QuickerTek adds antenna to 300 mW ExpressCard for MacBook Pro: Users of Apple's higher-end laptops can drop $200 to get a 300 mW Draft N (802.11n) ExpressCard and 5 dBi external antenna with a mounting clip. That's a lot of power, and it's important to recall that have a louder signal doesn't mean that distant base stations can necessarily hear you better. Draft N devices typically pair better listening (receive sensitivity) with higher transmission power, however.

Mac product ties location settings to Wi-Fi position: Centrix has updated its $29 Mac OS X location preferences program NetworkLocation to take advantage of Skyhook Wireless's Wi-Fi positioning data. You can now tie the package of settings that control what email account you use, iChat status, programs launched, disks mounted, and other factors, to where you're currently at.

By analysing the movements of human shadows in aerial and satellite footage, JPL engineer Adrian Stoica says it should be possible to identify people from the way they walk -- a technique called gait analysis, whose power lies in the fact that a person's walking style is very hard to disguise.

Video taken from above shows only people's heads and shoulders, which makes measuring the characteristic length and rhythm of a person's stride impossible. That's not true of shadows, though, Stoica told a security conference in Edinburgh, UK, last month. Shadows, he says, provide enough gait data to deduce a positive ID. To prove it, he has written software that recognises human movement in aerial and satellite video footage. It isolates moving shadows and uses data on the time of day and the camera angle to correct shadows if they are elongated or foreshortened. Regular gait analysis is then applied to identify people. In tests on footage shot from the sixth floor of a building, Stoica says his software was indeed able to extract useful gait data.

The article goes on to say that using satellite images would be harder, but that the basic idea is the same.

Of course, this is less useful for finding individuals and more useful for tracking a population as it moves about its day. But some individuals will have more distinctive gaits than others, and will be easier to track. Soon we may all need to walk with rocks in our shoes.