New decision variables for GNSS acquisition in the presence of CW interference
This paper investigates the matter of World Navigation Satellite System signal acquisition employing a shopper-grade receiver in the presence of continuous wave interference. By examining intimately the impact of interference on the acquisition search house, a set call variables are developed. These decision variables leverage the systematic properties of the interference observed within the search space, manipulating or differencing parts of it to achieve improved detection performance. Strategies based mostly on these variables are examined below a choice of operating eventualities as well as acquisition within the presence of interference when the receiver has some, or has no, a priori information regarding the interference. It is shown that a receiver employing these new schemes can tolerate up to 10 dB more interference power than a traditional receiver.
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