Antenna array with a small number of elements for angle-of-arriving GNSS integrity monitoring

In this paper planar antenna arrays with a small number of elements are discussed as applied to angle-of-arrival (AOA) integrity monitoring method for global-navigation satellite systems (GNSS). In accordance with AOA method decision making procedure about integrity presence or absence is created on the base of information about navigation signal sources direction-finding (DF) parameters. The maximum likelihood decision making procedure was statistically simulated and the most important characteristics such as false alarm and missed detection probabilities were estimated for different antenna arrays. Results of simulations showed the algorithms efficiency areas for different structures of antenna arrays so that finally the relationship between the number of antenna elements and missed detection probability were achieved for different number of analyzing signals. On bases of these results the relationship between required number of analyzed signals and the number of antenna elements providing the required probability based characteristics for integrity monitoring method can be estimated.