Three-Frequency 8-Channel Anti-Interference Satellite Navigation Terminal Anti

This is a miniaturized satellite navigation anti-interference integrated device tailored for civilian drones and industrial users, featuring three-frequency (BDS-B1, GPS-L1, GLONASS-G1) reception and 8-channel anti-interference capability. It supports simultaneous broadband interference resistance for three satellite systems (BDS, GPS, GLONASS) with a maximum of 3 interference signals suppressible.

Internally integrated with an antenna array, anti-interference components, and a satellite navigation receiver, the device protects user terminals from unintentional interference and malicious attacks, significantly enhancing PNT (Positioning, Navigation, Timing) information security. Key functional traits include: a built-in full-frequency navigation and positioning module that outputs data via the NMEA0183 protocol; dual data output options (serial port or RF port); software upgrade capability for anti-interference and receiver modules via serial port; system self-inspection and status patrol functions; anti-burnout protection (withstanding continuous wave power ≥10W); and safety safeguards like overvoltage protection and reverse connection protection.

• Tri-System & Three-Frequency Compatibility: Supports BDS, GPS, and GLONASS satellite systems, as well as three key civil frequency bands (BDS-B1, GPS-L1, GLONASS-G1). This avoids reliance on a single system, enhancing signal reception stability and anti-interference redundancy in complex environments.
• Superior Anti-Interference Performance: Achieves a signal-to-interference ratio of ≥105dB for single interference and ≥95dB for three simultaneous interferences. It effectively suppresses multiple suppressive interferences, including narrowband, broadband, pulse, sweep frequency, and Gaussian interference, ensuring stable navigation even under electromagnetic disturbances.
• High Precision & Reliability: Delivers horizontal positioning accuracy ≤1.5 meters, speed measurement accuracy ≤0.2 m/s, and timing accuracy ≤100ns, meeting strict requirements for navigation and timing-critical scenarios (e.g., power grids, drone operations).
• Integrated & Space-Saving Design: Combines an antenna array, anti-interference components, and a receiver in one compact unit (150mm*130mm*21mm, ≤400g). It can replace conventional positioning terminals (via built-in locator) and active antennas (via RF port), simplifying system configuration and reducing installation space.
• Flexible Connectivity: Offers two optional data output methods—DuPont line TTL serial port (connects to flight controller’s GNSS serial port) or SMA RF port (connects to drone locator’s antenna port)—adapting to diverse device connection needs.
• Robust Safety & Durability: Equipped with overvoltage protection, reverse connection protection, and anti-burnout capability (withstands continuous wave power ≥10W) to prevent damage from improper operation. It also resists harsh environments: operating temperature (-40℃~+55℃), storage temperature (-55℃~+70℃), 96% relative humidity (at 40℃), and compliance with GJB150A rain test standards.
• Low Power Consumption: Consumes ≤12W, making it suitable for battery-powered devices like drones and unmanned vehicles without excessive energy drain.

The device focuses on enhancing PNT information security by shielding user terminals from interference and attacks. Its typical application scenarios include:

• Timing Security for Critical Sectors: Used in power, telecommunications, and finance industries to ensure stable, interference-free timing signals—essential for the normal operation of power grids, communication networks, and financial transaction systems.
• Navigation Safety for Unmanned Systems: Provides reliable navigation support for drones, unmanned cars, and unmanned ships, ensuring accurate positioning during patrols, transportation, or operational tasks.
• Convoy Defense Navigation: Maintains stable navigation for vehicle fleets in complex or high-interference environments, preventing navigation failures that could disrupt mission execution.
• High-End Logistics Navigation: Improves navigation accuracy and anti-interference capability for logistics vehicles/equipment, safeguarding the efficiency and safety of high-value cargo transportation.
• Replacement of Conventional Devices: Serves as a direct substitute for traditional positioning terminals (via built-in locator) and active antennas (via RF signal access), reducing hardware costs and system complexity.

Q1: Which satellite systems and frequency bands does the product support?

A1: It supports three satellite systems (BDS, GPS, GLONASS) and three civil frequency bands: BDS-B1 (1561.098MHz), GPS-L1 (1575.42MHz), and GLONASS-G1 (1602MHz).

Q2: What is the product’s anti-interference performance, and which interference types can it suppress?

A2: Its anti-interference performance includes a signal-to-interference ratio of ≥105dB for single interference and ≥95dB for three simultaneous interferences. It can suppress narrowband interference, broadband interference, pulse interference, sweep frequency interference, and Gaussian interference. Additionally, it withstands continuous wave power ≥10W to prevent burnout.

Q3: How do I connect the product to transmit positioning data?

A3: Two connection methods are available (choose one):

• Serial Port Connection: Use the included DuPont line TTL serial port to connect to the flight controller’s GNSS serial port. Connect the “TX" end of the data cable to the flight controller’s “RX" interface, the “RX" end to the flight controller’s “TX" interface, and “GND" to “GND".
• RF Port Connection: Use an SMA cable to connect the product’s RF port to the drone locator’s antenna port. Note: Ensure the connected device’s interface does not supply power exceeding 5V to avoid power conflicts or damage.

Q4: What are the power supply requirements for the product?

A4: It uses an XT30 power connector with an input voltage range of 5~17V (12V is recommended). Do not exceed 17V, as this may damage the device.

Q5: Can the product’s software be upgraded, and if so, how?

A5: Yes, it supports software upgrades. You can upgrade the anti-interference module and receiver module via the TTL-level serial port (RXD0/TXD0, designated for upgrades).

Q6: What environmental conditions can the product withstand?

A6:

• Operating temperature: -40℃~+55℃
• Storage temperature: -55℃~+70℃
• Relative humidity: 96% (at 40℃)
• Rain resistance: Complies with GJB150A rain test requirements

Q7: What safety protections does the product offer?

A7: It includes overvoltage protection (prevents damage from excessive input voltage), reverse connection protection (avoids burnout from reversed power connections), and anti-burnout protection (withstands continuous wave power ≥10W).

Q8: Which protocol does the product use for data output?

A8: It outputs positioning and navigation information in compliance with the NMEA0183 protocol, which is compatible with most flight controllers and navigation devices.

Q9: How do I install and fix the product?

A9: Use M3 screws to install and secure the product to the platform carrier (e.g., drone, unmanned vehicle). Ensure the installation is stable to avoid vibration-induced damage.

Q10: What is the product’s weight and physical size?

A10: It weighs ≤400g and has dimensions of 150mm*130mm*21mm, making it lightweight and compact for space-constrained applications.