Impact Analysis and Detection Method of Intentional CW Jammers on Maritime DGPS

Abstract

Maritime differential GPS has been widely used for the enhancement of GPS positioning performance due to a little burden on transmitting the correction data and the easiness of correction processing to improve the position accuracy. But unfortunately, some maritime DGPS systems are found not to be able to perceive a decline of correction service quality under intentional jamming environment. For this reason, this paper focuses on a jamming detection method to minimize the effect of the maritime DGPS malfunction by CW jammers. Firstly this paper introduces the process of the traditional maritime DGPS under the CW jamming circumstances and presents the impact of CW jammers on DGPS receiver. And then, it is shown that the cause of maritime DGPS malfunction is the absence of an appropriate detection method as well as the use of the contaminated raw measurements in process of computing the pseudorange corrections through an impact analysis of real CW jammers on maritime DGPS. In this paper, an approach for jamming monitoring is proposed in order to effectively make up the maritime DGPS malfunction. And this paper shows the validity of the analysis results on the maritime DGPS malfunction by CW jammers and the detection performance of the proposed method for jamming monitoring using jamming simulation platform.ortunately, some maritime DGPS systems are found not to be able to perceive a decline of correction service quality under intentional jamming environment. For this reason, this paper focuses on a jamming detection method to minimize the effect of the maritime DGPS malfunction by CW jammers. Firstly this paper introduces the process of the traditional maritime DGPS under the CW jamming circumstances and presents the impact of CW jammers on DGPS receiver. And then, it is shown that the cause of maritime DGPS malfunction is the absence of an appropriate detection method as well as the use of the contaminated raw measurements in process of computing the pseudorange corrections through an impact analysis of real CW jammers on maritime DGPS. In this paper, an approach for jamming monitoring is proposed in order to effectively make up the maritime DGPS malfunction. And this paper shows the validity of the analysis results on the maritime DGPS malfunction by CW jammers and the detection performance of the proposed method for jamming monitoring using jamming simulation platform.