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。后向散射增强（BE）是指在湍流等随机介质中的RCS是自由空间中的两倍，这种现象称为双通道。由于BE与双通道效应的偏差，在估算RCS时存在很大的困难。为了克服这一现象，可以从不同角度计算目标的RCS，并取这些值的平均值。如果我们考虑到时间因素，这种技术将更加强大。换句话说，为了处理真实的时间检测，我们需要从不同角度并行计算目标的RCS。在此基础上，提出了将无线网络应用于网络化雷达系统（NRS）的通信中。不同的传感器之间的连接连接到计算机进行通信模拟，以提供平均RCS在同一时间。本项目将研究两个独立的问题：第一个问题，将研究随机介质中更复杂目标的散射波。旨在拓展大尺寸非凸目标RCS和BE的研究。在这方面，散射问题将通过考虑不同属性的入射波，目标，随机介质，入射波的偏振为2D和3D的问题来处理。在第二个问题中，将分析基于集中处理模型的NRS通信的要求，该模型在架构上与客户端-服务器模型相似。系统解决方案采用计算无线网络的形式，其中信道被选择为提供足够的响应时间和服务安全性。该网络将把一些短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。提出的无线交换机不仅适用于民用通信业务，而且适用于军事通信业务在拥塞情况下的应用。另一方面，激光雷达目标测距、探测和识别技术的研究，已成为各种应用中复杂目标散射特性评估和建模的关键技术之一。

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.