Abstract
The received global navigation satellite system (GNSS) signal has a very low power due to traveling a very long distance and to the nature of the signal’s propagation medium. Thus, GNSS signals are easily susceptible to signal interference. Signal interference can cause severe degradation or interruption in GNSS position, navigation, and timing (PNT) services which could be very critical, especially in safety-critical applications. The objective of this paper is to evaluate the impact of the presence of jamming signals on a high-end GNSS receiver and investigate the benefits of using a multi-constellation system under such circumstances. Several jamming signals are considered in this research, including narrowband and wideband signals that are located on GPS L1 or GLONASS L1 frequency bands. Quasi-real dynamic trajectories are generated using the Spirent™ GSS6700 GNSS signal simulator combined with an interference signal generator through a Spirent™ GSS8366 unit. The performance evaluation was carried out using several evaluation metrics, including signal power degradation, navigation solution availability, dilution of precision (DOP), and positioning accuracy. The multi-constellation system presented better performance over the global positioning system (GPS)-only constellation in most cases. Moreover, jamming the GPS band caused more critical effects than jamming the GLONASS band.
Highlights
IntroductionWe can name numerous applications that use or completely rely on global navigation satellite systems (GNSS) signals and services [1,2,3]
The global navigation satellite systems (GNSS) applicability has lately dramatically increased.We can name numerous applications that use or completely rely on GNSS signals and services [1,2,3].GNSS systems can provide good accuracy and availability under normal conditions
[9], whereas this study addresses discusses the benefits of using multi-constellation receivers over global positioning system (GPS)-only receivers under signal receivers
Summary
We can name numerous applications that use or completely rely on GNSS signals and services [1,2,3]. GNSS systems can provide good accuracy and availability under normal conditions. Their signals are prone to various disruption sources, including multipath and signal interference [4,5,6]. Signal jamming could cause severe functional hazards to a GNSS receiver. Examples of these unwanted effects are large position, velocity, and timing (PNT) errors, or a complete denial of service
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