Aerospace and Electronic Systems Magazine May 2017 - 2
In This Issue - Technically
COLLISION AVOIDANCE RADAR SYSTEM FOR THE BULLET TRAIN: IMPLEMENTATION AND FIRST RESULTS
Collision avoidance radar systems (CA-Radar) for the bullet train are an important safety and life preserving device
providing independent safety monitoring when a bullet train is traveling at high speeds. In this article, a new kind of
CA-Radar that uses a linear frequency modulated continuous wave (LFMCW) signal in Ku band has been proposed
for the bullet train to detect obstructions on the rail tracks in the forward direction. It combines the multiple signal
classification (MUSIC) algorithms and a sparse non-uniform linear array (SNLA) placed conformally with the locomotive. The structure of the CA-Radar is described, and the performance of the signal processing method is analyzed
using computer simulations. The experiments have demonstrated that the CA-Radar we proposed is feasible and effective.
THE TRACKER COMPONENT LIBRARY: FREE ROUTINES FOR RAPID PROTOTYPING
The Tracker Component Library is a free, open source, unrestricted, copyleft-free set of commented, modular, reusable routines in Matlab that can be used to rapidly prototype many aspects of target-tracking algorithms from filtering and data association to celestial and terrestrial modeling. Sample code showing the use of library components
is provided including a simple example of a complete Global Nearest Neighbor-Joint Integrated Probabilistic DataAssociation Filter (GNN-JIPDAF), which performs track initiation, maintenance, and termination.
SECURITY OF SCADA SYSTEMS AGAINST CYBER-PHYSICAL ATTACKS
Supervisory Control And Data Acquisition (SCADA) systems are large-scale industrial control systems (ICSs) that
are used to control and monitor geographically dispersed assets such as electric power grids, water networks, gas
pipelines and aerospace systems such as air traffic control, multi-sensor surveillance and satellite networks. While
the progress in information and communication technology have made modern SCADA increasingly powerful, these
systems of systems have also become more vulnerable to cyber-physical attacks, attacks not only on their physical
processes but also on their cyber components. In this article, we analyze the security of SCADA systems against malicious attacks in order to improve the resilience of our safety-critical infrastructures. First, we examine in detail the
security threats, cyber incidents and vulnerabilities of modern SCADA systems. Second, we classify malicious attacks
into several categories in order to better understand such potential dangers. Finally, we suggest several approaches to
SCADA attack detection and isolation.
POTENTIAL TRANSMIT BEAMFORMING SCHEMES FOR ACTIVE LPI RADARS
Active radar is often highly visible to intercept receivers due to its high-power signal transmission and thus, it is necessary to develop low probability of intercept (LPI) techniques to increase the system surveillance performance. This
article introduces several potential transmit beamforming schemes for active LPI radars, with an aim to call for more
publication and research on this promising topic. The first LPI scheme is to replace traditional high-gain array beam
with a series of spoiled low-gain beam to reduce the radar visibility without degrading the original radar performance.
Additionally, the potentials of frequency diverse arrays (FDA) and directional modulation are also suggested for active LPI radars.
INDUSTRY INSIGHTS: WHY IT IS IMPORTANT TO BUILD AN INNOVATION STRATEGY THROUGH PROJECT
MANAGEMENT MATURITY MODEL?
Private, public, and non-governmental organizations, all these must innovate to survive in the modern hyper-competitive business environment. This is especially true when addressing or trying to predict the next moves in the more
competitive technological markets. Innovating requires analyzing the environment, navigating in a "big data sea",
defining strategy, selecting appropriate options, adapting one's organization, and creating new value and benefits for
all stakeholders and for the market. An Innovation Strategy must rely on portfolio, program, and project management;
on adapted system engineering; as well as on organizational-enabling practices and capabilities. Planning and execution must be consistent and coherent to deliver better performance and to create results and sustainable competitive
advantage.
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IEEE A&E SYSTEMS MAGAZINE
MAY 2017
Table of Contents for the Digital Edition of Aerospace and Electronic Systems Magazine May 2017
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