In older types of Weather Radar such as antenna system used parabolic antenna that mechanically revolved around its axis in a particular sector. Diagram of direction of antenna moves so that the radar beam passed all the probing zone. Weather Radar principle of operationĪntenna system forms a narrow directional diagram in the horizontal plane and wide in the vertical. Weather Radar antenna is mounted on the nose part of aircraft under the fairing, made of radioparent material.įig. Antenna system designed for radiation and receiving of probing radar signals. Weather Radar transmitter generates radio probing signal at a frequency 9345 ± 15 MHц, which through antenna switch is supplied to the antenna system. Principle of operation of Weather Radar illustrates Fig. Principle of operation of Weather Radar based on the principle of action of primary radar. Modern Weather Radar also able to detect wind shear, which poses a real danger to aircraft and can lead to disaster. To solve navigation tasks Weather Radar can work in mode of browse of surface relief of the land. Modern Weather Radar can detect cloud structures at a distance of 200 km and area of storm activity and prevent entry of aircraft into them. Weather Radar designed for probing of the airspace ahead of aircraft and inspection of the underlying earth's surface (Fig.
