HyperSim is a complete radio scene simulator that goes far beyond what usual simulators provide. It allows to simulate both the physical layer (PHY) and the medium access control layer (MAC).
In a simple flat earth geometry, you can arrange several networks, working either in TDMA, FDMA, MF-TDMA, CSMA/CA, CDMA . . . or create simple independent carriers. On the PHY layer, you can choose any linear modulations (QPSK, OQPSK, 16QAM, 64APSK . . .), CP-NFSK, NC-NFSK, multi-tone modulations, OFDM, CPM, and even create TDM carriers.
Then you can set an interceptor at a specified location. This interceptor can be a simple isotropic antenna, but it can also be a network of antennas (for direction finding puposes), and it can be fixed or moving at a given speed and direction. Upon interception, the scattering channel is taken into account, as well as all relative positions, speeds and phase shifts. Receiver characteristics, wheter digital or analog, are also simulated (AGC, ADC limitations, impulsive noise, colored noise . . .).