Radar detection systems of targets in random media using wireless network-based communication system

雷达散射截面(RCS)是检测随机介质中复杂目标的重要参数之一。当湍流等随机介质中的RCS是自由空间中RCS的两倍时，会出现后向散射增强(BE)现象，这种现象称为双通道。由于BE偏离了双通过效应，因此很难估计RCS。为了克服规定的现象，可以从不同的角度计算目标的RCS，并取这些值的平均值。如果我们考虑时间因素，这种技术将更加强大。换句话说，为了处理实时检测，我们需要从不同角度并行计算目标的RCS。为此，我建议将无线网络应用于组网雷达系统(NRS)的通信。模拟连接到通信计算机的不同传感器之间的连接，以一次提供平均RCS。本项目将研究两个独立的问题：在第一个问题中，将研究从随机介质中更复杂的目标散射的波。其目的是扩展对大尺寸非凸目标的RCS和BE的研究。在这方面，对于2D和3D问题，将通过考虑入射波、目标、随机介质和入射波的极化的不同性质来处理散射问题。在第二个问题中，将分析基于集中式处理模型的NRS的通信需求，该模型在体系结构上类似于客户端-服务器模型。该系统解决方案采用计算无线网络的形式，其中的信道被选择以提供足够的响应时间和服务的安全性。该网络将把一些近程战术雷达连接在一起，每个雷达都有相关的数据处理设备。所提出的无线交换机不仅适用于民用通信业务，也适用于拥塞条件下的军用通信业务。另一方面，用于目标测距、探测和识别的激光雷达的研究已经成为评估和模拟不同应用中复杂目标散射特性的关键技术之一。

Radar cross-section (RCS) is one of the important parameters to detect complex targets in random media. Backscattering enhancement (BE) occurs when RCS in random medium like turbulence is double that in free space, this phenomenon is called double passage. There is a substantial difficulty in estimating RCS as a result of the deviation of the BE from the double passage effect. To overcome the prescribed phenomenon, RCS of the target can be calculated from different angles and the average can be taken of these values. This technique will be more powerful if we consider the time factor. In other words, to deal with real time detection, we need to calculate RCS of a target from different angles in parallel. In doing that, I propose to apply wireless network in the communication of a networked radar system (NRS). Connections among different sensors connected to computers that communicate are simulated to provide the average RCS at one time. Two separate problems will be investigated in this project: In the first problem, waves scattered from more complicated targets in random media will be investigated. It is aimed to extend the research of RCS and BE of nonconvex targets with large sizes. In this regard, the scattering problem will be handled by considering the different properties of the incident waves, targets, random media, and polarization of incident waves for 2D and 3D problems. In the second problem, the requirements will be analyzed for communication of a NRS based on a centralized processing model that is similar in its architecture to the client-server model. The system solution takes the form of a computing wireless network in which channels are chosen to give adequate response times and security of services. This network will link together a number of short-range tactical radars, each with associated data processing equipment. Proposed wireless switches are useful not only for civil communication traffic but also for military ones under the condition of congestion. On the other hand, the research on laser radar for target ranging, detection, and recognition has become the one key technology used to evaluate and model the characteristics of scattering from complex targets in the different applications.