Adrian Pogmore filmed graphic scenes of a couple having sex on their patio, a woman sunbathing naked in her garden, two nudists sitting outside their caravan and a couple lying naked outside their home.
Judge Peter Kelson at Sheffield Crown Court in northern England told Pogmore: "You, quite literally, considered yourself above the law."
Pogmore admitted four counts of misconduct in a public office and has been sacked by South Yorkshire Police.
The court heard that Pogmore, 51, was called the "team deviant" by colleagues, and was described as a "sex-obsessed air observer."
Kelson told Pogmore: "In short, you used a £2 million ($2.6 million, 2.2 million euros) helicopter which costs something like $1,000 an hour to run to advance your own sexual curiosities when it should have been detecting crime."
"Instead of deterring and detecting crime, you were committing crime."
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