Multi-beam radar for ground-like flight control of unmanned aerial vehicle and data fusion method

Abstract

The invention discloses a multi-beam radar for ground-like flight control of an unmanned aerial vehicle and a data fusion method. The radar comprises a radar antenna, a radar radio frequency front end, a radar signal processor, a data fusion processor, a radar antenna, a microstrip array transmitting antenna comprising at least three channels and having different wave beam orientations, and receiving antennas of at least two channels. The radar radio frequency front end transmits electromagnetic waves to at least three different directions through microstrip array transmitting antennas of at least three channels. Reflected waves after electromagnetic waves meet obstacles and are reflected are received by the receiving antennas of the at least two channels, processed by the radar signal processor respectively and fused into topographic information by the data fusion processor. The multi-beam radar antenna is adopted, the height information of the ground under the front position and in the heading forward direction and the heading backward direction can be detected at the same time, the single radar can output ground distance information in different directions at the same time, andthen the type of an operation plot is judged.

Description

technical field [0001] The invention relates to the technical field of radar detection, in particular to a multi-beam radar and a data fusion method used for ground imitation flight control of an unmanned aerial vehicle. Background technique [0002] The UAV needs to know the current accurate height information during the flight operation. For example, when the plant protection UAV is spraying pesticides, the distance between the UAV and the vegetation will directly affect the effect of pesticide spraying. At present, millimeter-wave radar products are mostly used for the fixed-altitude flight of UAV operations, which can measure the vertical distance between the UAV and the ground, and have achieved good application results in flat operating terrain scenarios. However, in the face of complex terrain such as hilly areas, mountains, and terraced fields, in order to meet the high-precision requirements of the millimeter-wave ground-imitation radar, it is necessary to design a ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a multi-beam radar and a data fusion method used for ground-following flight control of UAVs to solve the technical problem that the existing ground-following millimeter-wave radar cannot know the terrain changes in the forward direction in advance

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