Omnidirectional radar angle-measurement method and system based on rotating-field antenna

Abstract

The invention relates to the technical field of omnidirectional radar and discloses an omnidirectional radar angle-measurement method and system based on a rotating-field antenna. The method comprises the steps that airspace is divided according to an antenna combination mode; the azimuthal angle theta of a target trace point is calculated in an amplitude comparison and angle measurement mode; the tract point and flight path data association calculation is carried out, and flight paths meeting relevant requirements are updated; for flight paths not meeting the relevant requirements, a target true azimuthal angle is calculated, and flight paths are set, or trace point condensation processing is carried out. According to the omnidirectional radar angle-measurement method and system based on the rotating-field antenna, by the adoption of signal emitting time and space diversity technology, the problem that a measurement angle is fuzzy is solved, an omnidirectional radar angle-measurement theory based on the rotating-field antenna is perfected, and the omnidirectional radar with various advantages can be put into actual engineering application.

Description

technical field [0001] More specifically, the present invention relates to an omnidirectional radar angle measurement method and system based on a rotating field antenna. Background technique [0002] At present, rotating field antennas have been widely used in radar and many other fields, such as omni-directional transmission and reception of electromagnetic waves in the fields of communication, broadcasting and television. Omnidirectional radar based on rotating field antenna is a new type of radar, which has advantages such as small size, low power, light weight, low cost and high reliability. How to measure the azimuth angle of the target in the case of transmitting and receiving electromagnetic beams omnidirectionally is the key problem that the system radar firstly faces. [0003] The omnidirectional radar based on the rotating field antenna mainly measures the azimuth angle of the target by measuring the angle of the amplitude. When the target echo enters the receivi...

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Problems solved by technology

like figure 1 Shown is a schematic diagram of the rotating field antenna receiving target echoes with two pairs of vibrators. Since the vibrators of the receiving antenna have a 180° symmetry characteristic, it is impossible to distinguish whether the target echo enters the receiving antenna at an angle of θ or θ+180°. There is a method of measuring angle by amplitude Angle solution ambiguity problem

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