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Purchase drones under 200$ from http://yummyoffers.in/drones-with-camera/ Drones or UAVs typically fall into one of six functional categories (although multi-role airframe platforms are becoming more prevalent):
Target and decoy – providing ground and aerial gunnery a target that simulates an enemy aircraft or missile
Reconnaissance – providing battlefield intelligence
Research and development – used to further develop UAV technologies to be integrated into field-deployed UAV aircraft
Drones can also be categorised in terms of range/altitude and the following has been advanced as relevant at such industry events as ParcAberporth Unmanned Systems forum:
Hand-held 2,000 ft (600 m) altitude, about 2 km range
Close 5,000 ft (1,500 m) altitude, up to 10 km range
NATO type 10,000 ft (3,000 m) altitude, up to 50 km range
Tactical 18,000 ft (5,500 m) altitude, about 160 km range
MALE (medium altitude, long endurance) up to 30,000 ft (9,000 m) and range over 200 km
HALE (high altitude, long endurance) over 30,000 ft (9,100 m) and indefinite range
HYPERSONIC high-speed, supersonic (Mach 1–5) or hypersonic (Mach 5+) 50,000 ft (15,200 m) or suborbital altitude, range over 200 km
ORBITAL low earth orbit (Mach 25+)
CIS Lunar Earth-Moon transfer
CACGS Computer Assisted Carrier Guidance System for UAVs
Top 10 drones: U.S. UAV demonstrators in 2005
The U.S. Military UAV tier system is used by military planners to designate the various individual aircraft elements in an overall usage plan. The tiers do not refer to specific models of aircraft, but rather roles.
In 2013, the DHL parcel service tested a "microdrones md4-1000" for delivery of medicine.
Interspect UAS B 3.1 octocopter for commercial aerial cartographic purposes and 3D mapping
Civil Drone FOX-C8-HD AltiGator
IAI Heron, an unmanned aerial vehicle developed by the Malat (UAV) division of Israel Aerospace Industries
A Hydra Technologies Ehécatl taking-off for a surveillance mission
Beyond the military applications of UAVs with which "drones" became most associated, numerous civil aviation uses have been developed, including aerial surveying of crops, acrobatic aerial footage in filmmaking, search and rescue operations, inspecting power lines and pipelines, counting wildlife, delivering medical supplies to remote or otherwise inaccessible regions, with some manufacturers rebranding the technology as "unmanned aerial systems" (UASs) in preference over the military-connotative term "drones". Further uses of top 10 drones include reconnaissance operations,  cooperative environment monitoring,  border patrol missions,convoy protection, forest fire detection, surveillance,  coordinating humanitarian aid, plume tracking, search & rescue missions, detection of illegal hunting, land surveying, fire and large-accident investigation, landslide measurement, illegal landfill detection, and crowd monitoring.
UAVs have been used by military forces, civilian government agencies, businesses, and private individuals. In the United States, for example, government agencies use UAVs such as the RQ-9 Reaper to patrol the nation's borders, scout property, and locate fugitives. One of the first authorized for domestic use was the ShadowHawk UAV in service in Montgomery County, Texas, and is being used by their SWAT and emergency management offices.
Top 10 drones:Private citizens and media organizations use UAVs for surveillance, recreation, news-gathering, or personal land assessment. Occupy Wall Street journalist Tim Pool uses what he calls an "occucopter" for live feed coverage of Occupy movement events. The "occucopter" (one of the top 10)is an inexpensive radio-controlled quadcopter with cameras attached and controllable by Android devices or iOS. In February 2012, an animal rights group used a MikroKopter hexacopter to film hunters shooting pigeons in South Carolina. The hunters then shot the UAV down. UAVs or top drones also have been shown to have many other civilian uses, such as in agriculture, movies, and the construction industry. In 2014, a drone was used in search and rescue operations to successfully located an elderly gentleman with dementia who went missing for 3 days. In March 2015, the SXSW music festival in Austin, Texas banned drones, citing Wi-Fi bandwidth congestion and safety concerns.
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