Geolocation of multiple noncooperative transmitters using array processing

使用阵列处理对多个非合作发射机进行地理定位

• 批准号: 534556-2018
• 负责人: Roy, Sébastien
• 金额: $ 0.79万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=663845
• 关键词: Geolocation; multiple; noncooperative; transmitters; using

In phase 1 of this research endeavor (original Engage grant) the research problem was reformulated as the**simultaneous geolocation of multiple noncooperative transmitters existing in the same frequency band. This**functionality is pursued both in terms of devising appropriate and robust algorithms, and developing associated**hardware implementations to be validated on a hardware testbed according to a software-defined radio (SDR)**methodology. The plurality of transmitters requires the acquisition stations (at least 2-3 of them being required**for triangulating positions) to be equipped with antenna arrays. In order to implement this functionality in a**manner that is practical and robust in a multipath-rich propagation environment with modest antenna array**sizes (4-8 elements), a two-step process was proposed in phase 1 and validated in simulation consisting of 1-**applying a blind source separation (BSS) algorithm to extract the spatial signature of every transmitter and 2-**estimating the main direction of arrival (DOA) - presumably corresponding to the line of sight - from each**spatial signature. Given a DOA estimate from each acquisition station, triangulating a position becomes trivial.**In this proposed second phase, development of the two-step approach and its variants will continue in**simulation, and an efficient hardware architecture will be derived for the BSS algorithm in the first step.**Furthermore, another novel and simpler approach will be explored which utilizes the same BSS algorithm as a**first step, but does away with DOA estimation altogether, thus not requiring array calibration or a specific array**topology. Within the scope of phase 2, this second approach will be entirely implemented in hardware and**validated on the test bed.

在这项研究努力的第一阶段（原始参与赠款）中，研究问题被重新制定为同时存在于同一频段中的多个非合作发射器的地理位置。此**功能既是根据设计适当和鲁棒的算法的，也可以根据软件定义的无线电（SDR）**方法来验证相关的**硬件实现。多个发射机要求采集站（至少需要2-3个需要2-3个用于三角粘合位置）才能配备天线阵列。为了以一种实用的方式实现此功能，在具有适度的天线数组**尺寸（4-8个元素）的多径繁殖环境中是实用且健壮的，在阶段1中提出了两步过程，并在由1- **组成的仿真，应用盲源分离（BSS）算法来提取每个发射器的空间特征，2- **估计到达的主要方向（DOA） - 可能是从每种*对应的* *空间签名。给定每个采集站的DOA估算值，三角剖分的位置变得微不足道。第一步中的BSS算法。 *拓扑。在第2阶段的范围内，第二种方法将在硬件中完全实现，并在测试床上进行了验证。