Name | Description |
---|---|
Rcvd. Iso. 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. |
Flux Density | The power from the desired transmitter crossing a unit area normal to the direction of wave propagation. |
Spectral Flux Density | The dimensions are watts/(m^2 * Hz). 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. |
Rcvr Gain | Receiver Gain is the antenna gain (in dBi) of the receiver which is dependent on the antenna type used. |
Tequivalent | The equivalent system temperature (in K) 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. |
g/T | 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. |
C/No | 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). |
C/(No+Io) | The carrier to (noise + interference) ratio (C/(No+Io)) where C is the carrier power, No = kT (Boltzmann's constant * system temperature) and Io = interference power spectral density. |
C/N | 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. |
C/(N+I) | The carrier to (noise + interference) ratio (C/(N+I)) where C is the carrier power, N = kTB (Boltzmann's constant * system temperature * bandwidth) and I = interference power. |
Eb/No | The energy per bit to noise ratio (Eb/No) where Eb is the energy per bit and No = kT (Boltzmann's constant * system temperature). |
Eb/(No+Io) | The energy per bit to (noise + 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. |
C/I | C/I is the carrier power from the desired signal over the sum of all interferer powers. |
Delta T/T | The ratio of interference power spectral density Io and receiver noise spectral density No. |
Pwr Flux Density | The power crossing a unit area normal to the direction of wave propagation in watts per square meter (W/m^2). |
STK Programming Interface 11.0.1