The Scalable Network Modeling Interface exchanges data between the Scalable Network Modeling Interface physical layer model and an STK antenna object. This exchange of data enables you to combine the strengths of both analysis tools when evaluating communications links. The flow of the interaction between STK and the Scalable Network Modeling Interface application is shown below.
The details of this interaction follow.
How STK Interacts with the Physical Layer
- Determines access availability between two link antennas based on all active constraints. If STK determines that there is no access between the two antennas, STK tells Scalable Network Modeling Interface that communication is not possible.
- Models the antenna position and attitude.
- Based on the antenna attitude and relative geometry, STK computes the gain in the link direction.
- Models all signal power gains and losses between the input to the transmit antenna and the output to the receive antenna. This includes all propagation losses.
How Scalable Network Modeling Interface Interacts with the Physical Layer
- Determines transmit power, frequency, and data rate.
- Computes the received signal-to-noise ratio and BER based on the received power computed by STK.
Combined Interaction
Scalable Network Modeling Interface calls STK dynamically when a communication between wireless interfaces is required. The STK received power computation is driven by input power supplied by Scalable Network Modeling Interface and is dynamically varied by Scalable Network Modeling Interface at each time step.