User RAIM integrity and interference mitigation test results with upgraded German Galileo test range GATE

Assessment of Measurement Distortions in GNSS Antenna Array Space-Time Processing

“…Due to regulations, outdoor radio frequency (RF) power transmission in the GNSS bands is prohibited. Therefore, to undertake research involving GNSS signals impacted by interference from jammers and other transmitters, one should ideally have access to outdoor test facilities like GATE (Galileo Test and Development Environment) [21] or an anechoic chamber. An alternative way to generate interference is to combine interference signals through wires while collecting GNSS signals.…”

Analysis of ground transmitter interference range for GPS L1 signals in the ground test‐bed environment of a navigation satellite system

“…Because at least six satellites are required for receiver autonomous integrity monitoring fault detection and exclusion, we set the test‐bed environment in an area where six equidistant transmitters were deployed, as shown in Fig. 7 [6, 7]. Figs.…”

“…In 2008, the test‐bed began commercial operations by deploying six transmit stations and two monitoring stations, and since 2010, two additional transmit stations have been deployed for user integrity analysis. Because the transmit stations are located at well‐distributed mountains with an altitude of ∼1500 m, GATE has a horizontal dilution of precision (HDOP) of less than two [5–7]. In 2017, the GATE system was reduced from eight to three transmitter stations and was upgraded with the latest signal generator capabilities [8].…”