Removing the pilot from the cockpit means the uav has to be wirelessly connected to its controllers by vulnerable data links , whether via satellites or ground - based receivers 讓飛行員離開駕駛艙意味著無人機要通過安全欠佳的數據通信與它的操控者進行無線連接,不論是通過衛星還是地面接收器。
Cutler ' s experience includes building systems that use inexpensive ground receivers assembled from off - the - shelf pcs , low - cost ham radios and experimental software to capture incoming satellite data 卡特勒利用現成的個人電腦,加上便宜的業馀無線電設備及試驗軟體,以低廉的花費組裝出地面接收器,然后運用這個地面站建立系統,攔截來自衛星的資料。
The more precise the temporal information sent from the satellites to receivers on the ground , the better the receivers can calculate the distance traveled by the signals and then " triangulate " a position using measurements from at least three satellites 衛星傳送到地面接收器的時間信息越精確,就越有利于接收器計算出信號傳遞所經過的距離,并利用3顆以上衛星的數據進行三角定位。