Methods and apparatus for ameliorating signal reception

An apparatus for ameliorating signal reception of a satellite navigation receiver, the apparatus comprising:

• a receiver to receive a composite satellite signal comprising a desired signal component and an interference signal component);
• a converter to convert the received composite satellite signal to a digital received composite signal;
• and
• an interference rejecter to receive a first group of samples from the digital received composite signal, generate an interference estimate of the interference signal component based on the first group of samples, and combine the interference estimate and a second sample belonging to a second group of samples to remove, partially or entirely, the interference signal component from the composite satellite signal, the first group of samples received prior to the sample belonging to the second group of samples, wherein the removal is generally independent of a code chip rate of the desired signal component and substantially retains undistorted chip edge characteristics of the desired signal.

A tangible machine readable storage medium comprising instructions which when executed cause a machine to at least:

• receive a composite satellite signal comprising a desired signal component and an interference signal component;
• convert the received composite satellite signal to a digital received composite signal;
• receive a first group of samples from the digital received composite signal;
• generate an interference estimate of the interference signal component based on the first group of samples;
• and
• combine the interference estimate and a second sample belonging to a second group of samples to remove, partially or entirely, the interference signal component from the composite satellite signal, the first group of samples received prior to the sample belonging to the second group of samples, wherein the removal is generally independent of a code chip rate of the desired signal component and substantially retains undistorted chip edge characteristics of the desired signal component.