Aerospace and Electronic Systems Magazine August 2016 - 2
In This Issue - Technically
CELLULAR FOR THE SKIES: EXPLOITING MOBILE NETWORK INFRASTRUCTURE FOR LOW ALTITUDE AIR-TOGROUND COMMUNICATIONS
In the last few years, unmanned aerial vehicles (UAVs) have been standing out as a pervasive tool in numerous civil
and commercial applications. Although different wireless technologies can be employed to establish communications
between a UAV and a ground control station (GCS), most either limit the operational radius or increase substantially
the complexity of the system. Taking into account insights from our own real-world experiments and studies carried out
within the scope of the SAAS project from Instituto de Telecomunicações, in this article we discuss the use of mobile
networks for low altitude air-to-ground (A2G) communications as a possible solution to provide extended mobility and
range to operators and UAVs. Besides addressing the advantages and the associated constraints of using these networks,
we propose a flexible architecture for multiple UAVs and GCSs. Although our experimental results have shown that
current mobile networks can fulfil the basic requirements for many envisioned UAV applications, we discuss how the
evolution towards 5G networks is expected to improve the support for reliable real-time A2G communications and even
for air-to-air communications.
DESIGN OF TELECOMMAND SOFTWARE FOR THE MARS ORBITER MISSION
Interplanetary missions involve visibility constraints, high communication delays and limited bandwidth which requires
intelligent methods to send commands to the spacecraft and receive telemetry results. This article presents design of
telecommand software used in Mars Orbiter Mission (MOM) by the Indian Space Research Organization (ISRO). The
MOM has an Earth-centric, heliocentric, and Mars-centric phases. The MOM Telecommand Processor (MTcP) software
is designed to meet mission planning and operation in various mission phases. Since the MTcP is mission critical, any
problem onboard may lead to mission failure as it requires a significant time to get telemetry and to take any action on
that telemetry from the ground. Thus, the fault detection, isolation and reconfiguration logics are built in the MTcP software. The MTcP software also has remote programming features to accommodate any new requirements. The software
design presented is simple, general purpose, and database driven and was successfully flown on the Mars Orbiter Mission
launched in November 2013.
PIONEER AWARD: STATISTICAL ANTENNA THEORY: FORMATION AND EXTENSION
In this article, I set forth the essence and contents of statistical antenna theory (SAT), a theory of antennas with random
sources. It is important to note that the presence of randomness in an antenna leads to randomness in the field radiated
(or received) by the antenna and in all associated antenna parameters; and therefore, the language used to set out the principles of the science should be the same as that used to describe the theory of probability and the theory of random functions. The absence of a theory or set of principles that applied randomness to antennas impelled me in the early sixties to
create a new statistical antenna theory that included procedures for antenna investigations, descriptions of the apparatus
involved, terminology, concepts, and definitions. In this article, the foundations of the theory are set forth as applied to the
simplest kind of antenna - a linear continuous antenna with a uniform amplitude distribution for which the random phase
errors are set forth. Three statistical antenna characteristics are successively considered: mean, fluctuation, and correlation. Each of these demonstrates a dependence on phase errors' variance and correlation radius. The results obtained for
the simplest system further are generalized to many antenna types: linear and bi-dimensional, as well as continuous and
discrete. Along with this, new SAT issues are considered: the statistical antenna synthesis; transformation of the effect of
superdirectivity in SAT, and statistical antenna measurement theory, in addition to others. I spend a considerable amount
of space in this article on describing both my activities elucidating and popularizing SAT ideas and results, and on the
assistance I gave to groups of scientists from different organizations of the former USSR in their investigations on SAT.
STUDENT RESEARCH HIGHLIGHT: MACHe - MODEL-BASED ALGORITHM FOR CLASSIFICATION OF HELICOPTERS
Secondary motions of a target, such as rotating blades of a helicopter's main rotor, induce a Doppler modulation around
the main Doppler shift. This represents a unique feature of the target itself, known as micro-Doppler signature, and can
be used for classification purposes. In this student research highlight a model-based automatic helicopter classification
algorithm is presented. It is a parametric classification approach based on a sparse signal recovery method and it is independent of both the initial position of the blades and the aspect angle. The algorithm is tested on simulated and real data.
2
IEEE A&E SYSTEMS MAGAZINE
AUGUST 2016
Table of Contents for the Digital Edition of Aerospace and Electronic Systems Magazine August 2016
No label
Aerospace and Electronic Systems Magazine August 2016 - No label
Aerospace and Electronic Systems Magazine August 2016 - Cover2
Aerospace and Electronic Systems Magazine August 2016 - 1
Aerospace and Electronic Systems Magazine August 2016 - 2
Aerospace and Electronic Systems Magazine August 2016 - 3
Aerospace and Electronic Systems Magazine August 2016 - 4
Aerospace and Electronic Systems Magazine August 2016 - 5
Aerospace and Electronic Systems Magazine August 2016 - 6
Aerospace and Electronic Systems Magazine August 2016 - 7
Aerospace and Electronic Systems Magazine August 2016 - 8
Aerospace and Electronic Systems Magazine August 2016 - 9
Aerospace and Electronic Systems Magazine August 2016 - 10
Aerospace and Electronic Systems Magazine August 2016 - 11
Aerospace and Electronic Systems Magazine August 2016 - 12
Aerospace and Electronic Systems Magazine August 2016 - 13
Aerospace and Electronic Systems Magazine August 2016 - 14
Aerospace and Electronic Systems Magazine August 2016 - 15
Aerospace and Electronic Systems Magazine August 2016 - 16
Aerospace and Electronic Systems Magazine August 2016 - 17
Aerospace and Electronic Systems Magazine August 2016 - 18
Aerospace and Electronic Systems Magazine August 2016 - 19
Aerospace and Electronic Systems Magazine August 2016 - 20
Aerospace and Electronic Systems Magazine August 2016 - 21
Aerospace and Electronic Systems Magazine August 2016 - 22
Aerospace and Electronic Systems Magazine August 2016 - 23
Aerospace and Electronic Systems Magazine August 2016 - 24
Aerospace and Electronic Systems Magazine August 2016 - 25
Aerospace and Electronic Systems Magazine August 2016 - 26
Aerospace and Electronic Systems Magazine August 2016 - 27
Aerospace and Electronic Systems Magazine August 2016 - 28
Aerospace and Electronic Systems Magazine August 2016 - 29
Aerospace and Electronic Systems Magazine August 2016 - 30
Aerospace and Electronic Systems Magazine August 2016 - 31
Aerospace and Electronic Systems Magazine August 2016 - 32
Aerospace and Electronic Systems Magazine August 2016 - 33
Aerospace and Electronic Systems Magazine August 2016 - 34
Aerospace and Electronic Systems Magazine August 2016 - 35
Aerospace and Electronic Systems Magazine August 2016 - 36
Aerospace and Electronic Systems Magazine August 2016 - 37
Aerospace and Electronic Systems Magazine August 2016 - 38
Aerospace and Electronic Systems Magazine August 2016 - 39
Aerospace and Electronic Systems Magazine August 2016 - 40
Aerospace and Electronic Systems Magazine August 2016 - 41
Aerospace and Electronic Systems Magazine August 2016 - 42
Aerospace and Electronic Systems Magazine August 2016 - 43
Aerospace and Electronic Systems Magazine August 2016 - 44
Aerospace and Electronic Systems Magazine August 2016 - 45
Aerospace and Electronic Systems Magazine August 2016 - 46
Aerospace and Electronic Systems Magazine August 2016 - 47
Aerospace and Electronic Systems Magazine August 2016 - 48
Aerospace and Electronic Systems Magazine August 2016 - Cover3
Aerospace and Electronic Systems Magazine August 2016 - Cover4
http://www.brightcopy.net/allen/aesm/34-2s
http://www.brightcopy.net/allen/aesm/34-2
http://www.brightcopy.net/allen/aesm/34-1
http://www.brightcopy.net/allen/aesm/33-12
http://www.brightcopy.net/allen/aesm/33-11
http://www.brightcopy.net/allen/aesm/33-10
http://www.brightcopy.net/allen/aesm/33-09
http://www.brightcopy.net/allen/aesm/33-8
http://www.brightcopy.net/allen/aesm/33-7
http://www.brightcopy.net/allen/aesm/33-5
http://www.brightcopy.net/allen/aesm/33-4
http://www.brightcopy.net/allen/aesm/33-3
http://www.brightcopy.net/allen/aesm/33-2
http://www.brightcopy.net/allen/aesm/33-1
http://www.brightcopy.net/allen/aesm/32-10
http://www.brightcopy.net/allen/aesm/32-12
http://www.brightcopy.net/allen/aesm/32-9
http://www.brightcopy.net/allen/aesm/32-11
http://www.brightcopy.net/allen/aesm/32-8
http://www.brightcopy.net/allen/aesm/32-7s
http://www.brightcopy.net/allen/aesm/32-7
http://www.brightcopy.net/allen/aesm/32-6
http://www.brightcopy.net/allen/aesm/32-5
http://www.brightcopy.net/allen/aesm/32-4
http://www.brightcopy.net/allen/aesm/32-3
http://www.brightcopy.net/allen/aesm/32-2
http://www.brightcopy.net/allen/aesm/32-1
http://www.brightcopy.net/allen/aesm/31-12
http://www.brightcopy.net/allen/aesm/31-11s
http://www.brightcopy.net/allen/aesm/31-11
http://www.brightcopy.net/allen/aesm/31-10
http://www.brightcopy.net/allen/aesm/31-9
http://www.brightcopy.net/allen/aesm/31-8
http://www.brightcopy.net/allen/aesm/31-7
https://www.nxtbookmedia.com