Commercial PC-based processors cannot process samples at 60 MSPS (P-code) in real-time; however, pre-processors (FPGAs and DSPs) can perform the most process-intensive computations. To this end, the software-based system includes Modular Correlators and DSP Processors for real-time performance.

The software receiver has truly open architecture. Its various functional elements can come together to develop many different advanced GPS systems. To make this easier, we also offer different GPS signal simulators. The GPS Signal Simulator Software produces a data file (similar to sampled, downconverted signals from the RF front end) that the software receiver reads. The software simulates both L1 and L2 frequencies, and varied conditions (in geometry, dynamics, signal degradation and waveform) to evaluate a particular software receiver design. These simulations include precisely known conditions, allowing accurate benchmarks.

The software-based GPS signal simulator brings flexibility and high fidelity to specialized users. The software simulator continuously updates to include M-code, Galileo, L2C, L5, and other signals of interest.

Simulator-generated data can reside in hard disk-based storage systems and play back (via D/As and upconverters) to produce live GPS signals. This Hybrid Simulator offers several advantages. Most notably, it lets the user incorporate conditions impossible with regular hardware simulators.

We also offer several Real-Time GPS Simulators (for C/A only, C/A and P; and C/A, P, and M-code versions). These cover a wide range of uses and applications, from simple receiver design, development, and testing to complex dynamics, anti-jam, and hardware-in-the-loop applications.