25、（2009）Target Detection in High Clutter using Passive BistaticWiFi
Radar
Abstract—The rapid rollout of wireless local area networks (WLANs) has
provided a ubiquitous source of signal transmissions that may be
exploited for surveillance applications using passive bistatic radar (PBR)
and passive multistatic radar (PMR) systems. In this study, a series of
experiments were conducted to examine the feasibility of using IEEE
802.11 wireless fidelity (WiFi) transmissions for detecting uncooperative
targets in high clutter indoor environments. The range and Doppler
characteristics of the system were also assessed theoretically from an
ambiguity function analysis on WiFi signals having similar transmission
parameters. Through-wall detections of personnel targets moving at
differing velocities within an indoor environment are presented for the
first time. The work demonstrates the feasibility for developing a low
cost surveillance device that utilisesWiFi networks as transmitters of
opportunity.
25.(2009)在多杂波环境中，使用无源双基地Wifi雷达实现目标识别。
摘要-快速部署WLAN技术提供了一种无所不在的信号传输，而这种
信号传输也许可以用来实现双基地雷达和多基地雷达的监控应用。在
这篇论文中，我们进行了一系列的实验来检验在室内高杂波环境下，
使用802.11标准的WiFi传输在检测非组合目标方面的可行性。我们
也使用一个与WiFi信号传输具有类似参数的模糊函数对系统的范围
和多普勒特性做了理论评估。本文提出的在室内穿墙检测人的移动速
率改变的研究在这里是被首次提出。这篇文章展示了使用WiFi网络
作为传输介质来实现低成本监控设备的一种可行性。
26、（2012）Through-the-Wall Sensing of Personnel UsingPassive
BistaticWiFi Radar atStandoff Distances
Abstract—In this paper, we investigate the feasibility of uncooperatively
and covertly detecting people moving behind wallsusing passive
bistaticWiFi radar at standoff distances. A seriesof experiments was
conducted which involved personnel targetsmoving inside a building
within the coverage area of a WiFi accesspoint. These targets were
monitored from outside the buildingusing a 2.4-GHz passive multistatic
receiver, and the data wereprocessed offline to yield range and Doppler
information. Theresults presented show the first through-the-wall (TTW)
detectionsof moving personnel using passive WiFi radar. The
measuredDoppler shifts agree with those predicted by bistatic theory.
Further analysis of the data revealed that the system is limited by
thesignal-to-interference ratio (SIR), and not the signal-to-noise ratio.We
have also shown that a new interference suppression techniquebased on
the CLEAN algorithm can improve the SIR by approximately 19 dB. These
encouraging initial findings demonstrate thepotential for using passive
WiFi radar as a low-cost TTW detectionsensor with widespread
applicability.
26.相隔一定距离时，使用无源双基地雷达实现穿墙监测人体
摘要-这篇文章中，我们研究了使用双基地Wifi雷达对墙后的移动人
员目标的秘密检测问题。我们做了一系列的实验，这其中包括人在
Wifi接入点覆盖的建筑物内移动。我们在室外使用2.4-GHz的无源多
接收器监视目标，数据在线下进行处理以找出可接受的范围和多普勒
信息。结果展示了第一次使用无源雷对移动目标进行的穿墙检测。测
试的多普勒频移与通过双基地理论预测的结果一致。对于数据的深层
次分析揭示了系统受到干扰信号的限制而不是受到噪声信号的限制。
我们同时展示了新的基于CLEAN算法的干扰控制技术，通过这个算法，
SIR大约可以提高19dB。这些发现表明使用无源雷达在大范围内进行
低成本穿墙目标检测具有很大的潜力。
27、（2013）WIDAR: bistaticWI-fi Detection And Rangingfor off-the-shelf
devices
Abstract—The huge spread of wireless networks and the successof
location-aware applications require novel indoor positioningmechanisms
based on existing technologies such as IEEE 802.11.Taking inspiration
from the RADAR, we propose WIDAR: abistaticWI-fi Detection And
Ranging system for off-the-shelfdevices. WIDAR implementation is based
on the USRP2 platformand is able to locate 802.11 stations while they
operate in existinglegacy networks. No substitution or repositioning of
the AccessPoints is necessary. WIDAR works passively and does not
expectany dedicated action from the target WiFi node. No airtimeis
wasted and the target cannot even detect that it is beingranged. Such
features make WIDAR desirable in surveillance andmonitoring
applications where it can provide real-time trackingfunctionalities.
WIDAR:双基地雷达探测和现有设备的测距
摘要-无线网络的巨大传播范围和定位的成功应用要求以现有的技术
例如IEEE的802.11标准为基础的新的室内定位机制。受到雷达技术
的启发，我们提出WIDAR：一种基于WiFi探测和现有设备的测距系
统。WIDAR是基于USRP2平台实现的，并且当它们在传统的网络中
运行时可以定位802.11基站。这个不需要替换或者重新定位接入点。
WIDAR是被动定位的，不需要任何来自于目标WIFI节点的专门定位。
设备不需要启动事件，纵然是远程设备也探测不到他。这种特点使得
WIDAR在监督和管理的应用方面可以起到实时的跟踪作用。
28、WiFi-based Passive Bistatic Radar by using MovingTarget Indicator
and Least Square adaptive filtering
Abstract—Passive Radar is an emerging area of research that exploits
existing illuminators of opportunity to detect targets. Anumber of
researches have been investigating the use of digitaltransmissions (e.g.
DAB, DVB-T, Wifi, WiMAX) as illuminator ofopportunity, as well as
analogue transmissions (e.g. FM radioor UHF television broadcast). In
this paper we investigatea Wifi Based Passive Bistatic Radar architecture
where it isused a computationally feasible approach based on a
LeastSquare adaptive filter, a Moving Target Indicator filter and
