Give it a tinker.  They could be real.  The USAF was cited as considering using satellite for such purposes.

Check out the following youtube vid (CISCO telepresence holographic conference) :

https://www.youtube.com/watch?v=rcfNC_x0VvE

And with the availability of invisibility cloaks material commercially, sensors or devices can be hidden in

the background using this invisibility cloaks, but still able to see from inside out, but invisi from outside. 

This company supplies such materials  :  https://www.youtube.com/watch?v=_JpMJTJXf28

Below is excerpt from the above mentioned article : http://www.thehiddenevil.com/NewWorldWar.asp

Holograms

Three-dimensional images that look like real: Institute for National Security Studies, US Air Force Academy, Nonlethal Weapons: Terms and References, July 1997, Dr. Robert J. Bunker; Defense Science Board, Future Strategic Strike Forces, February 2004; CNN, Holographic Television to Become Reality, July 10, 2008

Holograms can be projected: US Air Force, Air Command And Staff College, Maxwell AFB, An Operational Analysis for Air Force 2025: An Application of Value-Focused Thinking to Future Air and Space Capabilities, May 1996; The New Hampshire, UNH is Hub of Pentagon's 'Non-Lethal' Weapons Research Program, April 25, 2008, Derek Price; The Boston Globe, Non-Lethal Weapons: Sci-fi Meets Pentagon, November 20, 2000, Ellen Barry; Wall Street Journal, Nonlethal Arms, New Class of Weapons Could Incapacitate Foe Yet Limit Casualties, January 4, 1993, Thomas B. Ricks; Government Product News, Non-lethal Weapons Offer More Counter-Terrorism Options, November 1, 2003; Strategic Studies Institute, US Army War College, Nonlethality and American Land Power: Strategic Context and Operational Concepts, June 15,1998, Douglas C. Lovelace, Jr., Steven Metz

Holograms are also to be projected into rooms: University of Bradford, UK, Bradford Non-Lethal Weapons Research Project (BNLWRP), Research Report Number 5, May 2004, Neil Davison, Dr. Nick Lewer

sophisticated PsyOp to be used on the civilian: Defense Science Board, Future Strategic Strike Forces, February 2004

to scare a target individual to death: Institute for National Security Studies, US Air Force Academy, Nonlethal Weapons: Terms and References, July 1997, Dr. Robert J. Bunker

The Air Force has also considered using satellites: Center for Strategy and Technology, Air War College, Maxwell Air Force Base, Lasers In Space: Technological Options For Enhancing US Military Capabilities, November 1997, Mark E. Rogers, Lieutenant Colonel, USAF

MagneLink Magnetic Communication System (MCS)

MagneLink™ Magnetic Communication System (MCS) is a wire

less, through-the-earth communication system developed by Lockheed Martin to meet the mining industry’s post-accident emergency wireless communications requirement. MagneLink MCS works by transmitting magnetic waves through the earth without the transmission wires and in-ground infrastructure currently required to communicate via standard radio communications. It is portable and provides wireless two-way, voice and text communications, and operates at ranges sufficient to communicate from the surface into shallow-to-deep underground mines.

The system will bring a tremendous emergency communications capability to the mining industry in the event of an accident where miners are trapped and have no other means of communicating with rescue teams on the surface. Lockheed Martin has leveraged its advanced communications and signal processing expertise to successfully develop this unique system in coordination with the National Institute of Occupational Safety and Health (NIOSH) to help save miners’ lives where possible following a mine accident.

Lockheed Martin recently conducted three successful MagneLink MCS in-mine demonstrations.

In December 2009, the MagneLink MCS Engineering Development Model’s functionality for voice and text communications was successfully demonstrated at a commercial mine in Dilliner, Pa.

In March 2010, Lockheed Martin tested MagneLink MCS at the Contrary Portal of CONSOL Energy’s Buchanan Mine in Mavisdale, Va. The system demonstrated successful two-way text and voice communications to a depth of 1550 feet and two-way text communications in excess of 1550 feet.

In June 2010, MagneLink MCS in-mine demonstrations were conducted at the National Institute of Occupational Safety and Health Test Mine in Bruceton, Pa. The system interfaced with hand-held radios similar to the miner emergency radios and successfully functioned as a multi-band receiver, establishing communications with multiple MagneLink MCS units without the requirement for the MCS units to be on the same channel to receive transmissions.

Lockheed Martin and the Mining Safety and Health Administration (MSHA) are currently working to certify the equipment for use in mines. MagneLink MCS systems will be available following MSHA certification.

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