YH839 Dual-Frequency (L1/L2) 4-Channel CRPA System

For missions that demand not only resilience against jamming but also superior positioning accuracy, the YH839 sets a new standard. By leveraging dual-frequency GNSS signals, this system provides enhanced integrity and precision, ensuring your platform maintains a decisive navigational advantage in complex operational environments.

Product Overview

The YH839 is a high-performance, dual-frequency 4-channel Controlled Reception Pattern Antenna (CRPA) system engineered for high-precision applications in contested environments. It is uniquely designed to process both L1 and L2 GPS signals, alongside BeiDou B1 and Galileo E1, allowing for effective ionospheric error correction and significantly improved accuracy. While nullifying up to three simultaneous jammers, the YH839 delivers a robust, reliable, and highly accurate PNT solution, making it ideal for demanding UAV, UGV, and precision guidance applications.

Key Features & Benefits

• Superior Accuracy with Dual-Frequency L1/L2: By processing both L1 and L2 signals, the YH839 mitigates ionospheric distortion, a primary source of positioning error, resulting in a significantly more accurate and reliable navigation solution.
• Robust Multi-Threat Defense: Employs advanced spatial filtering to identify and neutralize up to 3 simultaneous interference sources, ensuring continuous operation even during coordinated electronic attacks.
• SWaP-Optimized for Aerial Platforms: Offered in two configurations, including an ultra-lightweight magnesium alloy option (≤850g), to meet the stringent Size, Weight, and Power (SWaP) requirements of modern UAVs.
• Enhanced Satellite Availability: Multi-constellation support (BDS, GPS, Galileo) ensures the system tracks the maximum number of satellites, providing a resilient PNT output in diverse geographical locations.
• Mission-Ready for Harsh Environments: Engineered to perform reliably in extreme conditions with a wide operating temperature range (-40°C to +75°C) and integrated anti-spoofing technology.

Primary Applications

• UAVs for Surveying & Mapping: Delivers the high-precision PNT data required for photogrammetry, LiDAR mapping, and other remote sensing applications in GPS-denied areas.
• Precision Agriculture: Ensures accurate guidance for autonomous tractors and drones, even in the presence of RF interference.
• Unmanned Ground Vehicles (UGVs): Provides reliable, high-accuracy navigation for autonomous logistics, reconnaissance, and security platforms.
• Guidance Systems & Test Platforms: Offers a resilient and precise navigation core for the development and operation of guided systems.

Technical Specifications

Performance

Power

Physical Attributes

Environmental

Seamless Integration & Support

The YH839 is engineered for straightforward integration into platforms requiring high-precision navigation. We provide a full support package to ensure mission readiness:

• Comprehensive datasheet with Interface Control Document (ICD).
• 3D STEP models and detailed mechanical drawings for system integration.
• Direct engineering support for integration challenges and customization requests.

Frequently Asked Questions (FAQ)

What is the main benefit of a dual-frequency (L1/L2) anti-jam system?

The primary benefit is significantly higher accuracy. By comparing signals on two different frequencies (L1 and L2), the system can model and correct for atmospheric (ionospheric) delays. This removes a major source of error, leading to a more precise position calculation, which is critical for applications like aerial surveying and precision guidance.

Is the magnesium alloy version durable enough for harsh environments?

Absolutely. The magnesium alloy enclosure is engineered to meet rigorous environmental standards while offering a weight reduction of nearly 20%. It is an ideal choice for SWaP-sensitive platforms like UAVs, providing durability without compromising mission endurance or payload capacity.

Can this system be customized for other dual-frequency combinations, like L1/L5?

Yes. Our flexible architecture allows for customization. While the standard YH839 is configured for L1/L2, we can develop solutions for other frequency combinations, such as L1/L5, to meet specific customer requirements. Please contact our engineering team to discuss your needs.