Interference information gives link
budget information from each interferer to each receiver in the
CommSystem.
| Name |
Dimension |
Type |
Description |
| Time |
DateFormat |
Real Number |
Time. |
| Xmtr Name |
Unitless |
Text |
Name of the Transmitter used in the link. |
| Rcvr Name |
Unitless |
Text |
Name of the Receiver used in the link. |
| Interferer Name |
Unitless |
Text |
The interferer name is the path and name of the
interferer object(s) in the CommSystem. |
| Link To ID |
Unitless |
Integer |
Refers to the ID of the transmitter in the link
analysis. |
| IF Source ID |
Unitless |
Integer |
IF source ID refers to the ID of the interferer(s)
in the CommSystem. |
| Multibeam Antenna Beam-ID |
Unitless |
Text |
Refers to the ID of the beam within the Multibeam
Transmitter used in the link analysis. |
| Xmtr Power |
PowerUnit |
Real Number |
The RF power output of the transmitter as measured
at the input to the antenna. This is a user selectable value. |
| Xmtr Gain |
RatioUnit |
Real Number |
The antenna gain of the transmitter which is
dependent on the antenna type selected. For transmitter models that
do not have an antenna model, this is a user defined value. For the
simple source transmitter, 0 dB is reported since the simple source
transmitter is modeled as an isotropic radiator. |
| EIRP |
PowerUnit |
Real Number |
The effective isotropic radiated power in the link
direction. This value is the product of the transmitter power and
the transmitter gain in the link direction with the inclusion of
user defined post transmit gains and losses. |
| Xmtr Azimuth -
Phi |
AngleUnit |
Real Number |
The transmitter azimuth (Phi) is the angle between
the transmitter body +x axis and the x-y projection of the link
vector. |
| Xmtr
Elevation - Theta |
AngleUnit |
Real Number |
The transmitter elevation (Theta) is the angle
between the transmitter antenna bore-sight vector and the link
vector. |
| Rcvr Azimuth -
Phi |
AngleUnit |
Real Number |
The receiver azimuth (Phi) is the angle between the
receiver body +x axis and the x-y projection of the link
vector. |
| Rcvr
Elevation - Theta |
AngleUnit |
Real Number |
The receiver elevation (Theta) is the angle between
the receiver antenna bore-sight vector and the link vector. |
| Rcvd. Frequency |
FrequencyUnit |
Real Number |
The received frequency is the frequency that the
receiver is tuned to in order to communicate with the transmitter.
This frequency may be auto-tracked or entered by the user in the
receiver properties. |
| Freq. Doppler
Shift |
FrequencyUnit |
Real Number |
The frequency Doppler shift is the offset in
frequency between the transmitted frequency and the received
frequency. This value is zero for auto tracked receivers. |
| Rcvd. Iso. Power |
PowerUnit |
Real Number |
Received isotropic power is the power at the
receiver before the pre-receive gains/losses and the receiver
antenna gain added (in dBW). It is equal to the EIRP with all the
channel losses as well as the bandwidth overlap applied. |
| Power At Rcvr
Input |
PowerUnit |
Real Number |
The power at the receiver after the receiver
antenna gain is added (in dBW). It is equal to the EIRP in the
receiver direction with all the channel losses as well as the
bandwidth overlap and receiver gain applied. |
| C/I |
RatioUnit |
Real Number |
In the Interference Information data provider, C/I
is the carrier power from the desired signal over the individual
interferer power. Note that the Link Information data provider
defines C/I as the carrier power from the desired signal over the
sum of all interferer powers. If only one interferer is part of the
CommSystem, the two data providers will report the same value for
C/I. |
| Rcvr Gain |
RatioUnit |
Real Number |
Receiver Gain is the antenna gain (in dBi) of the
receiver which is dependent on the antenna type used. |
| Rcvr NormGain |
RatioUnit |
Real Number |
The normalized gain of the receiver is the ratio of
the gain in the link direction to the max gain of the receiver's
antenna. |
| Rcvr Loss |
RatioUnit |
Real Number |
Receiver loss is the propagation loss through the
channel between the transmitter and receiver. |
| Bandwidth
Overlap |
RatioUnit |
Real Number |
The bandwidth overlap factor is the fraction
(between 0 and 1) of transmitted power which is contained within
the receiver's bandwidth. The amount of power received by the
receiver is equal to the transmitted EIRP multiplied by the
bandwidth overlap factor and taking into account any propagation
losses. |
| Pwr Flux Density |
PowerFluxDensity |
Real Number |
The interference power from an individual
interference source, crossing a unit area normal to the direction
of wave propagation and computed over a reference bandwidth of
either 1 MHz, 40 kHz, 4 kHz, or 1 Hz. See "Power Flux Density
Technical Notes". |
| Pol. Rel. Angle |
AngleUnit |
Real Number |
The angle corresponding to the relative mismatch
between the transmitted signal polarization and the receiver
polarization. |
| Polarization
Effic |
RatioUnit |
Real Number |
The polarization match between the transmitted
signal polarization and the receiving antenna (or in case of Simple
and Medium models implied antenna) polarization. It is computed on
a scale of 0 - - 1. The value of 1.0 represents the perfect match
between the transmitter and the receiver polarizations. On the
opposite end of the scale, the value of 0.0 represents a perfect
mismatch. STK also provides an option to model Cross Polarization
Leakage value. The polarization mismatch value can not drop below
the user specified Cross Pol Leakage value. |
| Multibeam Xmtr Antenna
Beam-ID |
Unitless |
Text |
Unique ID for beam of a multibeam antenna. |
| Range |
DistanceUnit |
Real Number |
The range (i.e., distance between the primary and
secondary object) at the given time. |
| Free Space Loss |
RatioUnit |
Real Number |
Loss due to propagation through free space. |
| Atmos Loss |
RatioUnit |
Real Number |
Loss calculated by the selected atmosphere
model. |
| UrbanTerres Loss |
RatioUnit |
Real Number |
Loss calculated by the selected Urban and
Terrestrial model. |
| Rain Loss |
RatioUnit |
Real Number |
Loss calculated by the selected rain model. |
| Flux Density |
PowerFluxDensity |
Real Number |
The power from the desired transmitter crossing a
unit area normal to the direction of wave propagation. |
| Spectral
Flux Density |
PowerSpectralFluxDensity |
Real Number |
This is the power per unit area per unit bandwidth.
The power is computed across the receiver's bandwidth as seen by
the receiver's RF front end. The bandwidth is the receiver's total
bandwidth. The dimension is Power / (Area * Bandwidth), and is
typically represented in dBW/(m^2*Hz). |
| IF Time |
DateFormat |
Real Number |
Data elements from Link Information and Jamming
Information data providers can be combined into one report style.
The dependent interference time data element (IF Time) is used to
include the jamming time on the combined Link Information and
Jammer report. The jam info "independent time" is not visible on
the combined report style; only one independent time is allowed in
a report. The jammers may have additional time steps from
start/stop Access (e.g., Leo satellites). The Time bound field
helps to align the two data provider's data elements. |