ACRONYMS AND TERMS
ABM
Anti–ballistic missile
ACM
Anti–cruise missile
ALOC
Air Line of Communication
AOU
Area of Uncertainty
ASCM
Antiship cruise missile
ASW
Antisubmarine warfare
C4ISR
Command, Control, Communications, Computers,
Intelligence, Surveillance, and Reconnaissance
CEC
Cooperative Engagement Capability: a capability
that combines data from all platforms in an operation and allows the combined data to produce a
better shared COP
CG
Guided Missile Cruiser
CIC
Command Information Center
CIWS
Close-In Weapon System
CJTF
Commander, Joint Task Force
Collaboration A process in which operational entities actively
share information while working together toward a
common goal
Complete
graph
A fully connected directed or undirected graph
Complexity
Having several interrelated parts as in a network
with several interrelated operational entities
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Measures of Effectiveness for the Information-Age Navy
COP
Common operating picture: a view of the battlespace shared by all friendly forces
CVBG
Carrier battle group
CVIC
Carrier Intelligence Center
Directed
Graph
A graph for which the direction of the edges connecting two nodes is considered
EDA
Exploratory data analysis
Directed
Edges
Of a directed graph: arcs depicting direction of information flow between nodes; also referred to as
“directed connections”
EW
Electronic warfare
Exploratory
Analysis
The analysis of a large set of outcomes produced by
varying input parameter sets
FIFO
First-in-first-out queue discipline
GPS
Global Positioning System
Graph
A collection of nodes and connecting edges used to
represent a network
Indegree
of a Node
The number of edges that have that node as their
terminal node
Information
Entropy
A measure of the average amount of information in
a probability distribution. Also referred to as Shannon Entropy
Information
Superiority
The ability to collect, process, and disseminate information as needed; anticipate the changes in the
enemy’s information needs; and deny the enemy
the ability to do the same
INS
Inertial Navigation System
IPB
Intelligence Preparation of the Battlespace
ISMWG
Information Superiority Metrics Working Group
ISR
Intelligence, Surveillance, and Reconnaissance
JTFC
Joint Task Force Commander
Kilo
NATO designation for a Russian Project 877 DieselElectric Submarine
Acronyms and Terms xxxiii
Knowledge
Accumulated and processed information wherein
conclusions are drawn from patterns. In this
report measured as normalized information
entropy. See mathematical glossary below
LACM
Land-Attack Cruise Missile
Leakers
In this context, enemy missiles that elude friendly
defense systems.
Measures
Standards for comparison.
Metrics
Mathematical expressions that evaluate both the
relative effect of alternatives and the degree to
which one is better or worse than another.
MODLOC
Miscellaneous Operational Details Local
Operations: fixed, geographically defined
operating areas
MOE
Measure of Effectiveness
MOP
Measure of Performance
NCO
Network-Centric Operations
NCW
Network-Centric Warfare
ONR
Office of Naval Research
OOC
Out of Commission
Polling
Request from a central authority for information essential to selecting one of several candidates to
execute a mission
ROF
Ring of Fire (network-centric approach to littoral
warfare)
SAM
Surface-to-Air Missile
Saturation
A condition occurring when the number of attacking
missiles overwhelms the friendly defenses
SLAM-ER
Standoff Land-Attack Missile–Extended Response
SLOC
Sea Line of Communication
SM
Standard missile
SS
Attack submarine
SSN
Nuclear-powered attack submarine
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Measures of Effectiveness for the Information-Age Navy
SSPH
Single-Shot Probability of Hit
SSPK
Single-Shot Probability of Kill
Task Force
The nodes in the network actively engaged in the
operation
TBM
Theater (or Tactical) Ballistic Missile
TBMD
Theater Ballistic Missile Defense
TCT
Time-Critical Target
TEL
Transportable-Erector-Launcher
UCAV
Unmanned Combat Aerial Vehicle
V/STOL
Vertical/Short Takeoff and Landing
GLOSSARY OF MATHEMATICAL TERMS
This glossary records the more important mathematical terms used
in the report. The chapter reference is included because the same
term may have different meanings in each chapter it appears.
Term
A(b )
Definition
Designation for Aegis cruiser directing its SPY-1 radar to detect and track
ballistic missiles
Chapter
Reference
3
A(c )
Designation for Aegis cruiser directing its SPY-1 radar to detect and track
cruise missiles
3
nc , nb
The total number of launched cruise
missiles and ballistic missiles,
respectively, that are scheduled to
“arrive.”
3
T = τt
T is the total CM/BM attack time (in
minutes) and τ is the number of
attack time periods of duration t
3
λci , λ bi
The average arrival rates per minute
in time period i for cruise and ballistic
missiles, respectively
3
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Measures of Effectiveness for the Information-Age Navy
λ̂ ci , λ̂ bi
The estimated average arrival rates
per minute in time period i for cruise
and ballistic missiles, respectively
g = λ ct , g = λ bt The number of cruise and ballistic
missiles, respectively, arriving in a
time period
3
3
pc
The single-shot probability that a
Standard missile intercept from an
Aegis cruiser kills an attacking cruise
missile
3
PK
The effective probability that a
Standard missile interceptor will kill
an attacking cruise missile
3
PL = 1 − PK
The probability that an attacking
cruise missile will be a “leaker”
3
Li = PL λci t
The expected number of leakers in
time period i
3
Ef
The expected number of Standard
missiles that must be fired at each
attacking cruise missile
3
h
The number of attacking cruise
missiles detected at a given time
3
The mean time required for each
Aegis cruiser to engage an attacking
missile: τ1 is the mean time to prepare a launcher, τ2 the mean time
required to launch the intercept, and
τ 3 the mean time to fly out to the
target
3
The time required to prepare a
Standard missile launcher for the next
launch
3
µ=
1
τ1 + τ 2 + τ3
δ = τ1 + τ2
Glossary of Mathematical Terms
xxxvii
NL
The number of attacking cruise
missiles required to destroy an Aegis
cruiser
3
V 0 (x ), V 1(x ) ,
The maximum or target variance and
the minimum variance, respectively,
for the fraction of remaining missiles
arriving in the current time period
3 and
Appendix
A
H(x)
H (x ) = E [ln( f (x ))] = − ∫−∞ ln[ f (x )]f(x )dx
Information or Shannon entropy. See
Acronyms list for definition
3
K (λ )
The degree to which the attacking
missile arrival rate is known. Calculated as the normalized H (λ) .
3
δc , δ b
The minimum number of ACMs and
ABMs needed to assume the role of
defense against CMs and BMs,
respectively
3
I c(c) , I b(c)
The remaining inventories of ACMs
and ABMs on board A(c )
3
I c(b ) , I b(b )
The remaining inventories of ACMs
and ABMs on board A(b )
3
Ef
The number of Standard missiles
required to destroy an enemy missile
(f = c implies ACM and f = b implies
ABM)
3
Ff
Estimate of the future attack (f = c
implies CM attack and f = b implies
BM attack)
3
d (fc )
The number of Standard missiles A(c )
should launch against attacking
enemy missiles of type f (f = c implies
CM attack and f = b implies BM
attack)
3
∞
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Measures of Effectiveness for the Information-Age Navy
d (fb )
The number of Standard missiles A(b )
should launch against attacking
enemy missiles of type f (f = c implies
CM attack and f = b implies BM
attack)
3
E c ( c ), E c ( b ),
The expected number of ACMs fired
by A(c ) , A(b ) , or both
3
The expected number of ABMs fired
by A(c ) , A(b ) , or both
3
1/ λi
The mean time required to accomplish task i.
4
L , Lc , LcC
The network latencies: base, with
collaboration factored and with both
collaboration and complexity
factored
4
E c ( b, c )
E b ( c ), E b ( b ),
E b ( b, c )