The applications of Global Navigation Satellite System (GNSS) receivers are becoming wider in various commercial and military systems including even small weapon systems such as artillery shells. The precision-guided munitions such as SDB (Small Diameter Bomb) of United States can be used for pinpoint strike by acquiring and tracking the GNSS signal in high mobility situation. In this paper, a small GNSS receiver with embedded interference suppression capability working under high dynamic stress is developed which is applicable to the various weapon systems and can be used in other several harsh environments. The receiver applies a kind of matched filter and multiple correlator schemes for fast signal acquisition and tracking of even weak signals and a frequency domain signal processing method to eliminate the narrowband interference. To evaluate the performance of the designed GNSS receiver, the test scenario of high mobility and interference environment with the GNSS simulator and signal generator is developed. Then, the signal acquisition time and sensitivity, and interference suppression performances are tested.

Keywords: GNSS receiver, interference suppression, fast acquisition