Patent ID: 7463183
Filing Date: 2008-12-09
Classification: G01S

Abstract:
1. A panoramic warning system for a helicopter for detecting obstacles and the proximity of the ground, the system comprising: a plurality of radar sensors connected to a fuselage structure of the helicopter, assigned to different sectors of a sphere surrounding the helicopter, and producing radar beams at different wavelengths; a central identification-and-evaluation unit, wherein the plurality of radar sensors are configured to communicate signals representing range information cyclically to the central identification-and-evaluation unit; a cockpit display configured to represent the signals after the signals are edited and compared with predetermined warning thresholds, wherein the radar sensors assigned to sectors of the sphere below, behind and to the side of the helicopter operate with a short-range wavelength, and the radar sensors assigned to sectors of the sphere in front of the helicopter operate with a long-range wavelength, and wherein reflected radar beams include a superimposed identifier via at least one of an amplitude modulation or a frequency modulation, the identifier enabling at least one of a correct mapping to the respective sectors and a differentiation between different aircraft.