The following are elements of aerial photographic and satellite image interpretation.Location There are two primary methods to obtain precise location in the form of coordinates. 1) survey in the fiel ...
In remote sensing, ground sample distance (GSD) in a digital photo (such as an orthophoto) of the ground from air or space is the distance between pixel centers measured on the ground. For example, in ...
The Scout is a quadcopter in layout, with four rotors mounted on booms and four landing gear legs. Payloads are mounted underneath the fuselage on a gimbal mount.The Scout can be operated beyond the l ...
In September 2011 it was reported that the U.S. Army had signed a contract with AeroVironment for the supply of the Switchblade miniature drone. Switchblade is the first tactical armed drone for use b ...
The notion that small, even very small, UAVs might have practical uses arose in the early 1990s. In 1992, DARPA conducted a workshop titled "Future Technology-Driven Revolutions In Military Operations ...
Lidar was developed in the early 1960s, shortly after the invention of the laser, and combined the laser focused imaging with the radar ability to calculate distances by measuring the time for the sig ...
Passive sensors gather natural radiation that is emitted or reflected by the object or surrounding areas. Reflected sunlight is the most common source of radiation measured by passive sensors. Example ...
The pulse may be coded to reduce the chance that the rangefinder can be jammed. It is possible to use Doppler effect techniques to judge whether the object is moving towards or away from the rangefind ...
Virtually all rugged computers share an underlying design philosophy of providing a controlled environment for the installed electronics. The electronic components themselves may be selected for their ...
The Greek mathematician Menaechmus solved problems and proved theorems by using a method that had a strong resemblance to the use of coordinates and it has sometimes been maintained that he had introd ...
A new category of document scanner is the document camera. This does not refer to devices which are used as visual presenters, rather instead for the main purpose of document scanning.The process of c ...
Modern scanners are considered the successors of early telephotography and fax input devices.The pantelegraph (Italian: pantelegrafo; French: pantélégraphe) was an early form of facsimile machine tr ...
The term digitization is often used when diverse forms of information, such as text, sound, image or voice, are converted into a single binary code. Digital information exists as one of two digits, ei ...
BoPET film was developed in the mid-1950s, originally by DuPont, Imperial Chemical Industries (ICI) and Hoechst. In 1964, NASA launched Echo II (the second mission of Project Echo). It was a 40 m (131 ...
In the toy images to the right, the shelf edge was selected as the point where images are to coincide and the toys were arranged so that only the central toy was projecting beyond the shelf. When the ...
