CMIMO real-time radar resource management method with adaptive beam number and width

Abstract

The invention belongs to the field of MIMO radar resource management, and relates to a CMIMO real-time radar resource management method with adaptive beam number and width. The method comprises the following steps: firstly, determining an updated target set according to target prediction tracking precision, and determining a sub-array division number according to the number of updated targets; and then determining the signal-to-noise ratio demand of each target according to the expected tracking precision and the detection probability threshold, and obtaining the expected energy corresponding to each updated target according to a radar equation. In consideration of the characteristic that the CMIMO radar emits wide beams, whether the updated target can be irradiated by a single beam at the same time is determined according to the predicted position of the updated target, the saved beams are sequentially distributed to the target with the highest expected energy, and finally the multi-beam direction and the system emission energy are determined. According to the method, the number and width of multiple beams of the CMIMO radar can be adjusted in real time on the premise that the tracking precision requirement is met, and the purpose of saving system resources is achieved.

Description

technical field [0001] The invention belongs to the field of MIMO radar resource management, and proposes a CMIMO real-time radar resource management strategy with adaptive beam number and width. Background technique [0002] Compared with traditional phased array radar, MIMO radar has many advantages, such as better waveform diversity gain, stronger parameter identification ability, and lower probability of interception. MIMO radar can be divided into distributed MIMO radar and co-located MIMO radar according to the spatial distribution of antenna elements. Among them, the co-located MIMO radar structure is similar to the existing phased array radar structure, so it is easier to implement and has important practical value. Co-located MIMO radars can form multiple beams simultaneously, making them ideal for multi-target tracking (MTT). In this process, how to realize the reasonable allocation of system resources among multi-target tracking tasks becomes a key issue. [00...

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Problems solved by technology

[0006] The resource management strategy for optimizing MTT tracking performance in the above methods cannot be directly used to minimize system resource consumption; in the strategy for optimizing system resource utilization, only effective detection of targets is considered, and target tracking performance is ignored; in joint optimization In the strategy of system resource consumption and tracking accuracy, the expected tracking accuracy is not considered

Although individual strategies consider the desired tracking accuracy, this strategy is for single-beam co-located MIMO radars and cannot be used for simultaneous multi-beam MIMO radars

In addition, most of the above strategies ignore the real-time requirement of resource management, which is the premise of practical application of the strategy

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