Patent ID: 7407424
Filing Date: 2008-08-05
Classification: G01S

Abstract:
1. A method of determining the position of a moving flying object in a space, comprising: determining a first distance from a first sonic receiver mounted on the moving object to a first sonic transmitter located at a ground station unit, wherein the step of determining the first distance comprises: determining a second distance from the sonic receiver mounted on the moving object to a second sonic transmitter located at the ground station unit, the second sonic transmitter being located at a spaced distance from the first sonic transmitter; determining a third distance from the sonic receiver mounted on the moving object to a third sonic transmitter located at the ground station unit, and the third sonic transmitter being located at a spaced distance from the first and second sonic transmitter; utilizing the first distance, the second distance and the third distance to determine the position of the moving object in relation to the ground station unit; controlling through a remote control system using radio frequency modulation with signals corresponding to user input at least one of the yaw, roll, pitch motion, and also the throttle of the flying object space unit, and the control is through moving navigation keys and a control stick to convey control signals to a microprocessor, the microprocessor in turn emits signals to the flying object space unit through radio frequency signals from a radio transmitter and antenna; and wherein the first sonic transmitter, the second sonic transmitter and the third sonic transmitter are located relative to each other such that lines between them form a triangular configuration, and the moving flying object includes a propeller operable by a motive system, the propeller being arranged to be in a horizontal plane when the object is flying, and the propeller periphery is encircled with a protective circumferential outer structure, and including a gyro-stabilizing system for controlling the speed of the propeller thereby to control the movement of the object.