The invention provides an irregular-island-based method for planning a covered flight
route of an unmanned aerial vehicle, aiming at the problem of planning an unmanned aerial vehicle flight
route in an island domain. According to the method, the characteristics in island flight
route traverse are sufficiently considered, i.e. the distance from a take-off point to an island is taken into consideration, particularly for an island which is relatively far away from the coast, the total journey in island flight
route planning is influenced by the distance from the take-off point to the island to a large extent. in consideration of a geometric flight route
programming method, the distance from the take-off point to the island and other related issues, the invention provides a new optimal circular flight route method and abandons the traditional impractical flight
route planning method is abandoned; and situations such as the power of the aerial vehicle in flying are sufficiently considered in the new method. The method mainly comprises four aspects as follows: the extraction of the circumscribed polygon of the island, the calculation of the minimum span of the polygon, the calculation of the
minimum distance from the take-off point to the polygon, and the design of the flight route. By utilizing the method, the combination of island monitoring and unmanned aerial vehicle flight
route planning is realized, and the method particularly has a wide prospect on the aspect of offshore island monitoring.