ASM2000 GNSS Spoofing Interference Direction Finder
ASM2000 is no longer available for new orders. This page retains historical product information and technical specifications for reference. Contact GNSS Simulator to discuss current options for your GNSS monitoring requirements.
- Spoofing interference detection time: < 1 min
- Direction finding accuracy: 5° typical
- Supports single-site DOA and multi-site localization workflows
- Configurable 2-antenna or 4-antenna deployment
- Simultaneous monitoring of authentic and spoofing GNSS signals
GNSS spoofing direction finder for protected-area signal security monitoring.
It can monitor authentic GNSS signals and spoofing interference signals simultaneously, issue timely alarms, and support both single-site DOA direction finding and multi-site networking for spoofing source localization.
The platform is positioned for GNSS security monitoring, protected-area GNSS monitoring, spoofing interference detection, direction-of-arrival GNSS monitoring, and broader-area GNSS spoofing source localization workflows.
- Real-time observation of authentic and spoofing GNSS signal behavior
- Single-site direction-of-arrival estimation using multi-antenna deployment
- Multi-site networking for source localization across wider areas
- Engineering deployment support for antenna layout and monitoring integration
< 1 min
Rapid spoofing interference detection with alarm output for monitoring workflows.
5° typical
Typical spoofing source direction finding accuracy with antenna spacing greater than 0.5 m.
2 or 4 antennas
Configurable deployment depending on site constraints and DOA requirements.
BDS / GPS / GLONASS / Galileo
Supports BDS and GPS signal monitoring, with optional GLONASS and Galileo signal configurations.
DC 15–32 V
Power consumption is ≤20 W, with 220 V AC adapter available.
≤1 kg
Compact field-deployable form factor for monitoring station installation.
Two deployment modes for direction finding and source localization.
ASM2000 can operate as a single monitoring site for direction-of-arrival estimation or as part of a distributed network for broader-area localization.
Single-Site DOA Direction Finding
Uses multi-antenna deployment at a single monitoring site to estimate the direction of spoofing interference sources.
- Suitable for protected-area monitoring
- Supports 2-antenna or 4-antenna configuration
- Typical direction finding accuracy: 5°
- Recommended antenna spacing: > 0.5 m
Multi-Site Networking Localization
Multiple ASM2000 monitoring sites can be networked to support spoofing source localization across a wider area.
- Suitable for critical infrastructure zones
- Supports distributed monitoring workflows
- Uses Ethernet networking for data output and coordination
- Helps improve source localization confidence
Capabilities for GNSS spoofing monitoring, alarm output, DOA, and localization.
ASM2000 focuses on monitoring and security assessment workflows. It is not positioned as a simulator, spoofing signal generator, or jammer.
Real-Time Dual Signal Monitoring
Monitors authentic GNSS signals and spoofing interference signals simultaneously, with reporting of key observables such as satellite ID, pseudorange, and carrier phase.
Rapid Spoofing Detection & Alarm
Detects spoofing interference quickly and issues alarm notifications, with a typical detection time of less than 1 minute.
DOA Direction Finding
Supports direction-of-arrival based spoofing source direction estimation using multi-antenna deployment.
Multi-Site Source Localization
Supports networking between multiple monitoring sites for broader-area spoofing source localization workflows.
Flexible Antenna Configuration
Supports configurable 2-antenna or 4-antenna deployment depending on installation conditions and direction-finding requirements.
High Channel Monitoring Capacity
Supports simultaneous monitoring of BDS 18 authentic + 18 spoofing channels and GPS 16 authentic + 16 spoofing channels.
Engineering specifications for monitoring deployment review.
Specification groups are separated by function so engineering teams can review signal support, detection logic, channel capacity, antenna configuration, power, physical characteristics, and interfaces.
Signal Types
Supported and optional GNSS signal monitoring inputs
Spoofing Detection Capability
Detection criteria and alarm timing
Number of Signal Channels
Authentic and spoofing channel monitoring capacity
Sensitivity
Receiver acquisition and tracking sensitivity
Antenna and Direction Finding
Supported antenna count and typical DOA performance
Power
Input voltage and consumption characteristics
Physical Characteristics
Mechanical size and weight
Interfaces
RF input and networking interfaces
Protected-area monitoring scenarios for GNSS signal security assessment.
ASM2000 supports monitoring, detection, direction finding, and source localization workflows for facilities and infrastructure zones where trusted GNSS positioning and timing matter.
Protected-Area GNSS Security Monitoring
For monitoring GNSS spoofing interference around facilities that require trusted positioning and timing.
Critical Infrastructure Navigation Protection
For airports, ports, energy facilities, transport hubs, and other infrastructure zones where GNSS integrity matters.
Spoofing Threat Assessment
For evaluating whether spoofing-like interference exists in a designated area and identifying the likely source direction.
Distributed Monitoring Network
For multi-site deployments where several monitoring nodes are used to support broader-area localization.
From antenna deployment to direction finding or localization.
A typical ASM2000 workflow connects antenna layout, dual signal monitoring, spoofing interference detection, alarm output, and single-site or multi-site source analysis.
Deploy Antennas
Set up 2-antenna or 4-antenna configuration with recommended spacing.
Monitor GNSS Signals
Monitor authentic GNSS and spoofing interference signals simultaneously.
Detect Spoofing Activity
Identify spoofing interference based on signal power, code delay offset, and signal behavior.
Generate Alarm & Observables
Output alarm notifications and key observables such as satellite ID, pseudorange, and carrier phase.
Estimate Direction / Localization
Use single-site DOA or multi-site networking to support source direction finding or localization.
Integration guidance for antenna layout, data output, and site networking.
Data Output and Networking
Use Gigabit Ethernet RJ45 for data output, monitoring integration, and multi-site networking.
RF Inputs
Use SMA RF inputs for multi-antenna deployment.
Antenna Spacing
Maintain antenna spacing > 0.5 m for typical direction-finding performance.
Antenna Count
Select 2-antenna or 4-antenna configuration based on site constraints and localization requirements.
Engineering Support
Engineering support is recommended for antenna layout, site networking, and monitoring workflow integration.
Need a current GNSS monitoring solution?
ASM2000 is no longer available for new orders. Share your monitoring objectives, target GNSS signals, deployment environment, and direction-finding or localization requirements to discuss currently available options.