ECHO: Complete Solution for GNSS Monitoring & Interference Detection
| Company | ECHO RF |
|---|
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ECHO is a solution for GNSS monitoring and RF interference detection, allowing the continuous observation and logging of GNSS signals. With 3 main components, the Monitoring Station (MS), the monitoring Center (MC) and the User Application, ECHO provides periodical GNSS performance reports and real-time alerting of GNSS degradations and interference events.
With algorithms based on international aviation standards and GNSS performance specifications, ECHO is the GNSS monitoring solution for supporting Performance Based Navigation operations at airports. The interference monitoring module is designed to alert the users when an interference event is detected, allowing them to take the necessary mitigation measures. A network of high-density low-cost monitoring stations can be deployed for increased airport safety.
KEY FEATURES
▶ Monitoring of all GNSS bands and constellations
▶ Dedicated RF front ends for frequency bands monitoring
▶ Jamming and spoofing detection using various independent detectors
▶ Wide array of interfaces, including an Ethernet over USB for rapid configuration and data handling
▶ Intuitive web based user interface aggregating data from the network
▶ Automated generation of alerts and reports
▶ Platform as a Service (PaaS) using OS-level virtualization for fast software delivering
▶ Continuous 24/7 operation and remote access
▶ Data storage capability of GNSS measurements and signal snapshots for at least 30 days
▶ Low-cost modular and compact design for easy installation and upgrades
▶ Increased threat monitoring coverage and improved source localization accuracy through a network of monitoring stations
▶ Continuous updates in line with GNSS evolutions and ICAO recommendations
System performance
▶ Monitoring of all GNSS signals:
– GPS: L1C/A, L1PY, L2C, L2P, L5
– GLONASS: L1CA, L2CA, L2P, L3 CDMA
– Beidou: B1I, B1C, B2a, B2I, B3
– Galileo: E1, E5a, E5b, E5 AltBoc
– QZSS: L1C/A, L2C, L5
– Navic: L5
– SBAS: EGNOS, WAAS, GAGAN, MSAS, SDCM (L1, L5)
▶ User configurable update rate of GNSS measurements and interference detection parameters between 1 Hz – 10 Hz
▶ 5 independent, synchronized, receiving modules with 3 RF Front-Ends each
▶ 60 MHz bandwidth per signal band
▶ 16 bit baseband ADC resolution
▶ Less than 20 seconds warm start
▶ Less than 45 seconds cold start
▶ Internal logging capabilities
Communication
▶ Gigabit Ethernet 1000BaseTX interface (8P8C)
▶ TCP/IP communication protocol
Jamming and spoofing detection
▶ Independent jamming and spoofing detectors with predefined or user Configurable thresholds
▶ Configurable detector weighting scheme for improved reliability
▶ Detection of pulsed and non-pulsed interference signals which are above the thermal noise by 8 dB (NBI) and 5 dB (WBI)
▶ Automatic interference classification:
– Amplitude Modulated (AM)
– Frequency Modulated (FM)
– Continous Wave (CW)
– Swept Continous Wave (SCW)
▶ Source direction finding based on Total Received Power with single station direction finding accuracy of 10 degrees
▶ Maximum 5 seconds latency between interference detection and user notification
Jamming detectors
▶ Power spectral density
▶ Total received power
▶ Carrier to Noise density monitoring
▶ PVT-based monitoring
▶ Measurement quality monitoring
Spoofing detectors
▶ Carrier to Noise density monitoring
▶ Correlation peak monitoring
▶ Doppler monitoring
▶ PVT-based monitoring
▶ Receiver Autonomous Integrity Monitoring
Environmental and physical characteristics
▶ Antenna module with mounting and cables, designed for outdoor operation
▶ Compact hardware box sized for integration into a 19″ 2U rack
▶ 10 MHz external reference oscillator input
▶ UPS for 2 hours of autonomous operation
▶ Output for feeding a test signal
▶ IP 20 housing for indoor installation
▶ IP 65 housing for outdoor installation
▶ Operating temperature: -40 to +65 degrees C
▶ Storage temperature: -40 to +85 degrees C
Operational characteristics
▶ Maximum 10 MS connected to a MC
▶ Automatic detection, classification and localization of RF interference sources
▶ Comprehensive and configurable GNSS performance and signal quality reports
▶ Configurable outputs: raw samples in standard GNSS output formats, interference detection results, signal snapshots, status of each individual detector, alerts, reports
▶ Compliance to ICAO SARPs and EUROCAE MOPS interference and GNSS monitoring requirements
▶ Optional integration of a detailed visualisation of the RF status, including spectrum plots for multiple GNSS bands
User interface
The following features are included:
▶ Map view of the network of ECHO stations with color-coded status based on the real-time performance
▶ Periodic report visualization with integrated date selection, including the ICAO recommended GNSS performance KPIs, summary of KPIs compliance to standardized thresholds and interference events statistics
▶ Computation of GNSS performance KPIs for GPS/GLONASS/GALILEO L1/E1 and EGNOS NPA, APV-I and LPV-200, with the possibility of adding other constellations and frequencies
▶ Real-time GNSS and interference status, indicating the presence of a degradation event and the bearing of the detected interference
▶ Coherent design, which can be customized with additional features according to the user needs
▶ Alerting via the user application and email
