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Report Style: Link Information

Provides detailed information on the link budget of a communications system.

Data Providers:Link Information , Receiver Information , Transmitter Information

Availability: Reports

Number of Sections: 3

Section 1

Data Provider:Transmitter Information

Column Listing

Column	Column Name	Element	Type	Dimension	Description
1	Transmitter Name	Transmitter Name	Text	Unitless	The transmitter name is the path and name of the transmitter object(s) in the CommSystem.
2	Transmitter ID	Transmitter ID	Integer	Unitless	Transmitter ID refers to the ID of the transmitter(s) in the CommSystem.

Section 2

Data Provider:Receiver Information

Column Listing

Column	Column Name	Element	Type	Dimension	Description
1	Receiver Name	Receiver Name	Text	Unitless	The receiver name is the path and name of the receiver object(s) in the CommSystem.
2	Receiver ID	Receiver ID	Integer	Unitless	Receiver ID refers to the ID of the receiver(s) in the CommSystem.

Section 3

Data Provider:Link Information

Column Listing

Column	Column Name	Element	Type	Dimension	Description
1	Time	Time	Real Number or Text	Date	Time.
2	Link To ID	Link To ID	Integer	Unitless	Refers to the ID of the transmitter in the link analysis.
3	Xmtr Power	Xmtr Power	Real Number	Power	The RF power output of the transmitter as measured at the input to the antenna. This is a user selectable value.
4	Xmtr Gain	Xmtr Gain	Real Number	Ratio	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.
5	EIRP	EIRP	Real Number	Power	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.
6	Xmtr Azimuth - Phi	Xmtr Azimuth - Phi	Real Number or Text	Angle	The transmitter azimuth (Phi) is the angle between the transmitter body +x axis and the x-y projection of the link vector.
7	Xmtr Elevation - Theta	Xmtr Elevation - Theta	Real Number or Text	Angle	The transmitter elevation (Theta) is the angle between the transmitter antenna bore-sight vector and the link vector.
8	Rcvr Azimuth - Phi	Rcvr Azimuth - Phi	Real Number or Text	Angle	The receiver azimuth (Phi) is the angle between the receiver body +x axis and the x-y projection of the link vector.
9	Rcvr Elevation - Theta	Rcvr Elevation - Theta	Real Number or Text	Angle	The receiver elevation (Theta) is the angle between the receiver antenna bore-sight vector and the link vector.
10	Rcvd. Frequency	Rcvd. Frequency	Real Number	Frequency	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.
11	Rcvd. Iso. Power	Rcvd. Iso. Power	Real Number	Power	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.
12	Flux Density	Flux Density	Real Number	PowerFluxDensity	The power from the desired transmitter crossing a unit area normal to the direction of wave propagation.
13	Rcvr Gain	Rcvr Gain	Real Number	Ratio	Receiver Gain is the antenna gain (in dBi) of the receiver which is dependent on the antenna type used.
14	Train	Train	Real Number	Temperature	Train is the antenna noise temperature component attributed to the rain model.
15	Tatmos	Tatmos	Real Number	Temperature	Tatmos is the antenna noise temperature component attributed to the gaseous absorption model.
16	Tsun	Tsun	Real Number	Temperature	Tsun is the antenna noise temperature component attributed to the sun.
17	Tearth	Tearth	Real Number	Temperature	Tearth is the antenna noise temperature component attributed to the earth. This is applicable only to receivers not on the ground.
18	Tcosmic	Tcosmic	Real Number	Temperature	Tcosmic is the antenna noise temperature component attributed to the cosmic background. This is applicable only to receivers not on the ground.
19	Tother	Tother	Real Number	Temperature	Tother is the antenna noise temperature component attributed to other antenna noise sources.
20	Tantenna	Tantenna	Real Number	Temperature	Tantenna is the antenna noise temperature which is the sum of all the noise source components.
21	Tequiv	Tequiv	Real Number	Temperature	The equivalent system temperature is specified by the user as a constant value or computed at each time step from the receiver system temperature parameters defined by the user.
22	g/T	g/T	Real Number	GainTempRatio	G/T = (Receiver Gain)/(System Temperature at the Receiver). The ratio of the receive antenna gain G to the total system temperature T is the "figure of merit" for the receiver (in dB/K). The figure of merit is independent of the point where it is calculated. However, the gain and system temperature must be specified at the same point.
23	C/No	C/No	Real Number	SpectralDensity	The carrier to noise density ratio (C/No) where C is the carrier power and No = kT (Boltzmann's constant x system temperature) is the noise density. It is equivalent to C/N with a normalized Bandwidth (B=1).
24	C/(No+I)	C/(No+I)	Real Number	SpectralDensity	The carrier to noise-plus-interference density ratio (C/(No+Io)), where C is the carrier power, No = kT (Boltzmann's constant * system temperature), and Io = interference power spectral density.
25	Bandwidth	Bandwidth	Real Number	Frequency	Bandwidth is the Receiver Bandwidth.
26	Bandwidth Overlap	Bandwidth Overlap	Real Number	Ratio	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.
27	C/N	C/N	Real Number	Ratio	The carrier to noise ratio (C/N) where C is the carrier power and N = kTB (Boltzmann's constant x system temperature x bandwidth) is the noise power.
28	C/(N+I)	C/(N+I)	Real Number	Ratio	The carrier to noise-plus-interference ratio (C/(N+I)), where C is the carrier power, N = kTB (Boltzmann's constant * system temperature * bandwidth), and I = interference power.
29	Eb/No	Eb/No	Real Number	Ratio	The energy per bit to noise ratio (Eb/No) where Eb is the energy per bit and No = kT (Boltzmann's constant * system temperature).
30	Eb/(No+I)	Eb/(No+I)	Real Number	Ratio	The energy per bit to noise-plus-interference ratio (Eb/(No+Io)), where Eb is the energy per bit, No = kT (Boltzmann's constant * system temperature), and Io = interference power spectral density.
31	BER	BER	Real Number	Unitless	Bit Error Rate (BER) is the probability that a bit is in error (i.e. a zero is transmitted but a one is received). The BER is the number of bits in error divided by the total number of bits sent. STK uses table lookup from a .mod file to extract a BER given an Eb/No. STK interpolates the table as necessary to determine the appropriate bit error rate for a particular bit energy level. If the bit energy is smaller than the first value in the table, the bit error rate for the first value is used. If the bit energy is larger than the last value in the table, a default bit error rate of 1.0e-30 is used to indicate no errors.
32	BER+I	BER+I	Real Number	Unitless	Bit error rate in the presence of interference (BER+I) is the probability that a bit is in error (i.e. a zero is transmitted but a one is received) in the interference environment. The BER+I is the number of bits in error divided by the total number of bits sent. STK uses table lookup from a .mod file to extract a BER+I given an Eb/(No+Io). STK interpolates the table as necessary to determine the appropriate bit error rate for a particular bit energy level. If the bit energy is smaller than the first value in the table, the bit error rate for the first value is used. If the bit energy is larger than the last value in the table, a default bit error rate of 1.0e-30 is used to indicate no errors.
33	C/I	C/I	Real Number	Ratio	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.
34	DeltaT/T	DeltaT/T	Real Number	Ratio	The ratio of interference power spectral density Io and receiver noise spectral density No.
35	Pwr Flux Density	Pwr Flux Density	Real Number	PowerFluxDensity	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".