Continuous Wave Interference Rejection
A consequence of society’s rapid adoption and evolution of technology is the increase in the amount of electronic radiation and interference emissions experienced in average operating environments. This is particularly a concern for GPS since at best it is dealing with signal strengths of -121 dBm. – interference raises the noise floor making it more difficult to extract satellite signals. Filtering can always be used to restrict the bandwidth seen by a receiver, reducing the noise floor.
But what happens when interference occurs in the GPS band around 1575.42 MHz?
Fortunately interferers and their harmonics occur at specific frequencies. Based on this SigNav’s Continuous Wave Interference Rejection algorithms can “quarantine” any channel affected, removing their influence on the timing solution. The channel is restored to operation once the interferer is no longer present.
