High-Precision TTL Serial RF Output Dual-Frequency 8-Channel Anti-Interference

This is a miniaturized satellite navigation anti-interference integrated device designed for civilian drones and industry users, featuring dual-frequency (dual-band) and 8-channel anti-interference capabilities. It supports the reception of RNSS signals from BeiDou-2, BeiDou-3 (covering B1C/B3I civil codes) and GPS (covering L1C/A civil code), with operating frequencies including BDS-B3 (1268.52MHz±10.23MHz), BDS-B1 (1575.42MHz±16.368MHz), and GPS-L1 (1575.42MHz±16.368MHz).

Internally integrated with an antenna array, anti-interference components, and a satellite navigation receiver, the device can suppress multiple types of suppressive interference, including narrowband interference, broadband interference, pulse interference, sweep frequency interference, and Gaussian interference, and withstand up to 3 jamming signals. It is equipped with a full-frequency navigation and positioning module, outputting data in compliance with the NMEA0183 protocol via either a TTL serial port or an RF port.

Key performance parameters include: horizontal positioning accuracy ≤1.5 meters, speed measurement accuracy <0.2 m/s, timing accuracy <100ns, input voltage range 5~17V (12V recommended), power consumption ≤17W, weight <500g, and overall dimensions 150mm*130mm*26.5mm. Additionally, it has functional features such as software upgrade (via serial port for anti-interference and receiver modules), system self-inspection and status patrol, anti-burnout (withstanding continuous wave power ≥10W), and safety protections (overvoltage protection, reverse connection protection).

• Strong Anti-Interference Capability: It achieves a single-interference signal-to-interference ratio ≥105dB and a three-interference signal-to-interference ratio ≥95dB, effectively suppressing various common suppressive interferences (narrowband, broadband, pulse, etc.), ensuring stable navigation even in complex electromagnetic environments.
• Dual-System & Dual-Frequency Compatibility: By supporting both BeiDou (BeiDou-2/3) and GPS systems, as well as dual-frequency signals (B1/B3 for BeiDou, L1 for GPS), it enhances signal reception stability and anti-jamming redundancy, avoiding reliance on a single satellite system.
• High Precision & Reliability: With horizontal positioning accuracy ≤1.5 meters, speed measurement accuracy <0.2 m/s, and timing accuracy <100ns, it meets the high-precision requirements of navigation and timing scenarios. The built-in full-frequency positioning module further ensures consistent data output.
• Integrated & Space-Saving Design: It integrates an antenna array, anti-interference components, and a receiver into one unit, and can replace conventional positioning terminals and active antennas. Its compact size (150mm*130mm*26.5mm) and lightweight (<500g) design make it suitable for installation on space-constrained devices like drones and unmanned vehicles.
• Flexible Connectivity & Safety: It offers two data output options (serial port/RF port) to adapt to different device connection needs. The power/data interface uses a J30J-9ZK connector, and the device is equipped with overvoltage, reverse connection, and anti-burnout protections to prevent damage from improper operation or external factors.
• Wide Environmental Adaptability: It operates in a temperature range of -40℃~+55℃, stores in -55℃~+70℃, resists 96% relative humidity (at 40℃), and meets GJB150A rain test requirements, making it applicable to harsh industrial and outdoor environments.

The device is mainly used to protect user terminals from unintentional interference and malicious attacks, enhancing the security of PNT (Positioning, Navigation, Timing) information. Its typical application scenarios include:

• Timing Security: Used in power, communications, and finance sectors to ensure stable and secure timing signals, which are critical for the normal operation of power grids, communication networks, and financial transaction systems.
• Unmanned Vehicle Navigation: Provides reliable navigation support for drones, unmanned cars, and unmanned ships, ensuring accurate positioning and safe operation in tasks such as patrol, transportation, and operation.
• Defense & Fleet Navigation: Applied to fleet defense scenarios to maintain stable navigation for vehicle fleets in complex environments, avoiding navigation failures caused by interference.
• High-End Logistics Navigation: Improves the navigation accuracy and anti-interference capability of logistics vehicles or equipment, ensuring the efficiency and safety of high-value cargo transportation.
• Replacement of Conventional Devices: Serves as a substitute for conventional positioning terminals (with its built-in locator) and active antennas (in RF signal access mode), simplifying system configuration and reducing hardware costs.

A1: It supports BeiDou-2, BeiDou-3, and GPS satellite systems. For frequency bands: BDS-B3 (1268.52MHz±10.23MHz), BDS-B1 (1575.42MHz±16.368MHz), and GPS-L1 (1575.42MHz±16.368MHz). The supported civil codes are B1C, B3I (for BeiDou), and L1C/A (for GPS).

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

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

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

A4: The input voltage range is 5~17V (12V is recommended), and it uses an XT30 power supply. Do not exceed 17V to prevent damage to the device.

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

A6: - Operating temperature: -40℃~+55℃;

• Storage temperature: -55℃~+70℃;
• Relative humidity: 96% (at 40℃);
• Rain resistance: Meets the requirements of the GJB150A rain test.

A7: It is equipped with overvoltage protection (to prevent damage from excessive input voltage) and reverse connection protection (to avoid burnout caused by reverse power connection). It also has an anti-burnout function (withstanding continuous wave power ≥10W).

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