Radar detection method and device assisted by programmable intelligent reflecting surface

Abstract

The invention relates to a radar detection method and device assisted by a programmable intelligent reflecting surface. The method comprises: in a current period, according to a relative distance of each combination scheme and a prior probability of each combination result when each combination scheme is taken as a detection result in the current period, obtaining an optimization parameter of the current period, the optimization parameter comprising configuration of a transmitted waveform and a reflecting surface, the combination scheme comprising target directions where all detection targets are located, one detection target corresponding to one target direction in one combination scheme; obtaining an actual receiving signal of the current period based on the optimization parameter of the current period; and determining a detection result based on the number and direction of the detection targets under each combination scheme, the actual receiving signal of the current period and the actual receiving signals of all periods before the current period. According to the invention, the propagation channel between the radar antenna and the target can be optimized, the signal attenuation is reduced, and the radar detection performance is improved.

Description

technical field [0001] The invention relates to the field of radar detection, in particular to a radar detection method and device assisted by a programmable intelligent reflective surface. Background technique [0002] Driven by the demands of applications such as virtual reality and unmanned driving, positioning and perception have become important functions of future wireless networks. Among many positioning and sensing technologies, radar has attracted more and more attention due to its advantages in cost and performance. Specifically, with the development of RF CMOS and Multiple-Input Multiple-Output (MIMO) , MIMO) technology development, the cost of radar is getting lower and lower. Radar can also directly obtain the speed of the target through the Doppler effect, which is especially suitable for automatic driving. However, the existing radar detection system passively accepts the propagation channel between the radar and the target. When the channel condition is not...

AI Technical Summary

Problems solved by technology

However, the existing radar detection system passively accepts the propagation channel between the radar and the target. When the channel condition is not good, the attenuation of the radar signal will be very severe, which will reduce the performance of radar detection. Therefore, there is an urgent need for a propagation channel that can be regulated radar

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