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Antenna Scatterers Analysis Program

Source Code Symbol Dictionary


A characters of the input data cards
ABAP backscattering phi plane angle for plotting
ABAT backscattering theta plane angle for plotting
ABIP bistatic scattering phi plane angle for plotting
ABIT bistatic scattering theta plane angle for plotting
ACSP absorption cross section for phi polarization
ACST absorption cross section for theta polarization
AFFP far-zone phi plane angle for plotting
AFFT far-zone theta plane angle for plotting
AM radius of the thin wire of the structure
BM outer radius of the dielectric shell of the insulation of the wire
C elecments of the open-circuit impedance matrix
CG branch currents for the structure
CGD cosh gd for a given segment
CJ loop currents for the structure
CMM conductivity of the wire
D length of a given segment
ECSP extinction cross section for phi polarization
ECST extinction cross section for theta polarization
EFF radiation efficiency
EP loop currents induced by a phi polarized wave
EPP phi-polarized far-zone field of the dipole mode
EPPS scattered electric field in the phi direction due to a phi polarized wave
EPTS scattered electric field in the theta direction due to a phi polarized wave
EP2 complex permittivity of insulation
EP3 complex permittivity of ambient medium
EP4 complex permittivity of ground
ERR EP4/EP3
ER2 relative dielectric constant of insulation
ER3 relative dielectric constant of the ambient medium
ER4 relative dielectric constant of the ground
ET loop current induced by a theta polarized wave
ETA intrinsic impedance of the ambient medium
ETPS scattered electric field in the phi direction due to a theta polarized wave
ETT theta polarized far-zone field of the dipole mode
ETTS scattered electric field in the theta direction due to theta polarized wave
EX near-zone electric field in the x direction
EY near-zone electric field in the y direction
EZ near-zone electric field in the z direction
E0 8.854E-12 (permitivity of free space)
FHZ frequency in hertz
FMC frequency in Megahertz
GAM intrinsic propagation constant of the ambient medium
GG time-average input power
GPP power gain associated with the phi polarized component
GTT power gain associated with the theta polarized component
HGT height of the structure above the ground plane
IA first node of a given segment
IB second node of a given segment
IBISC indicator for bistatic scatter calculations
ICARD indicator for the data cards
ICJ dimension corresponding to the number of simultaneous linear equations
IFLAG indicator for program termination
IGAIN igain indicator for antenna gain calculations
IGRD indicator for the presence of the ground plane
INC indicator for the type of far-zone calculations
INEAR indicator for near-zone calculations
INM dimension corresponding to the number of monopoles
INT number of integration steps
ISC indicator for the insulation
ISCAT indicator for backscatter calculations
IWR indicator for current distribution output
I1 endpont node of a given dipole
I12 indicator for auxiliary matrix
I2 terminal node number of a given dipole
I3 endpoint node number of a given dipole
JA first segment number of a given dipole
JB second segment number of a given dipole
KFLAG print indicator
KGEN list of generator/feed locations
LOAD indicator for structure load
LZD list of impedance/load locations
MAX maximum of the number of segments connected to any one given node
MD list of dipoles sharing a given segment
MIN minimum of the number of segments that connected to any one given node
MSG indicator for error printout
N number of simultaneous linear equations
ND total number of dipoles sharing a given segment
NGEN indicator for antenna calculations
NM number of segments
NPL indicator for polar plotting
OMEGA angular frequency
PH phi angle for far-zone calculations
SCSP scattering cross section for phi polarization
SCST scattering coross section for theta polarization
SGD sinh gd of a given segment
SIG2 conductivity of insulation
SIG3 conductivity of the ambient medium
SIG4 conductivity of ground
SPPM echo area phi incident-phi scattered wave
SPTM echo area phi incident-theta scattered wave
STPM echo area theta incident-phi scattered wave
STTM echo area theta incident-theta scattered wave
TD2 loss tangent of the insulation
TD3 loss tangent of the ambient medium
TH theta angle for far-zone caculations
TP 2p (6.26318)
U0 1.2566e-6
VG antenna complex driving voltages
VOLT list of VG's
X x-coordinate of each node
XNP list of XP's
XP x-coordinate for near-zone calculations
Y y-coordinate for each node
YNP list of YP's
YP y-coordinate for near-zone calculations
Y11 complex power input
Z z-coordinate of each node
ZLD complex load at a given node
ZLLD list of ZLD's
ZNP list of ZP's
ZP z-coordinate for near-zone calculations
ZS surface impedance of the wire
Z11 antenna input impedance

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Last modified on: 3 Nov 2007