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Appendix I / Utilities
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22.1 Utility CMS Groups
22.1.1 General Utilities
CMS group [ GENERAL ]
General utilities comprise 23 system clocks ranging from 1Hz to 8kHz split
from a 16 kHz Master Clock; Runge-Kutta state integration (order 1-4);
function gradients; random number generators (Normal, Uniform, Rayleigh
and Bi-normal); statistical analysis package used by the interactive interface;
function and surface interpolation modules.
System Clock Update
Runge-Kutta Integration
Real Variable Comparator
Random Number Generator
PRBS Initialisation
Normal Distributed Variables
Bi-modally Distributed Variables
Uniformly Distributed Variables
Rayleigh Distributed Variables
Simulation PRBS Noise Sequences
22.1.2 WGS 84, Target and Missile Data
CMS group [ GEOMETRY ]
22.1-3
Time and Date Stamp
Recursive Statistical Analyser
Integer Word Bit Manipulation
1D Linear Interpolation
2D Bi-Linear Interpolation
Numerical Differentiation
ASCII to Integer Re-formatting
Convex Surface Testing
Integer Word Single Bit Delay
Simulation speed has been sacrificed to provide commonly used point-mass
kinematics. This information is refreshed at a rate in excess of any practical
system implementation so as to promote rapid algorithm development. The
data is derived from the reference states and, where possible, from state
observer output. The simulation variables relating to this data have been
selected as prescribed in the Glossary with those derived from the observer
states prefixed by”F_”.
Closest Approach Detection and Reporting
Geodetic Referenced Parameters
Target Kinematics
22.1.3 Axis Transformations
CMS group [ AXTRAN ]
Missile Kinematics
Missile/Target Relative Inertial Kinematics
Relative Missile and Target Kinematics
These utilities deal with the conversion between Cartesian and Polar coordinates,
and transformation matrix direction cosines. They cover the
projection of vectors onto the principal planes of a frame, and the angle
subtended by the rotation of one frame with respect to another.