A new carrier phase-based monitor is developed to instantaneously detect two-dimensional ionospheric gradients. In order to detect gradients at satellite acquisition, it is necessary for ground-based fault detection to rely directly on instantaneous ground facility measurements. The paper proposes a new monitor (termed the null space monitor) by combining measurements from multiple, spatially separated ground antennas through a null space transformation. In addition, comparison results with previously published monitors show that the null space monitor covers the largest possible range of detectable ionospheric gradients.
Carrier phase null space monitor for ionospheric gradient detection
IEEE Transactions on Aerospace and Electronic Systems ; 50 , 4 ; 3230-3243
2014-10-01
899151 byte
Article (Journal)
Electronic Resource
English
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