From Firefighting to Precision Agriculture: Industrial Drones Navigate Confidently with Septentrio mosaic-G5

Industrial UAVs are no longer confined to open farmland or calm skies. Today’s multifunctional drones operate in high-rise urban corridors, on mountainsides, inside electromagnetic interference zones, and at altitude in extreme weather — missions where a momentary loss of positioning accuracy can have serious consequences. This is the operational reality that AGR’s B100P platform was designed for, and where precision GNSS technology becomes mission-critical.

The Challenge: GNSS in the Harshest UAV Environments

As UAV applications expand into urban infrastructure, emergency response, and complex terrain logistics, traditional single-frequency GNSS navigation increasingly falls short. The problems are well-known among drone engineers:

• Multipath interference near tall buildings distorts GNSS signals and degrades positioning accuracy
• Electromagnetic interference from dense 5G networks, industrial parks, and counter-UAV systems disrupts navigation
• Signal blockages in mountainous terrain, valleys, and forested areas cause signal jumps and navigation failures
• Spoofing risks in sensitive zones put mission safety at risk

Hangzhou AGR Intelligent Technology Co., Ltd. (AGR), a leading industrial UAV innovator founded in 2015, faced all of these challenges head-on when developing their B100P multifunctional platform. Their solution was to build around Septentrio’s mosaic-G5 P3 — an ultra-compact, multi-frequency GNSS module designed specifically for demanding mobile applications.

About the AGR B100P: One Platform, Many Missions

The AGR B100P is a heavy-duty multifunctional UAV designed to operate across a wide range of industrial applications from a single airframe. Where most commercial drones are optimised for a single use case, the B100P is engineered to switch roles — and the positioning system at its core needs to perform reliably across all of them.

Applications the B100P serves include:

• High-altitude firefighting — deploying directly to building facades and elevated structures inaccessible to ground equipment
• Building facade & glass cleaning — precise lateral positioning along skyscraper exteriors, where multipath is severe
• Precision agricultural spraying — accurate row-by-row passes in mountainous orchards and terraced fields
• Urban last-mile logistics — high-value material delivery in dense electromagnetic environments
• High-altitude cargo transport — mountainous routes where signal coverage is inconsistent

Why mosaic-G5 P3: The Technology Inside

At the heart of the AGR B100P’s navigation system is Septentrio’s mosaic-G5 P3 — an ultra-compact GNSS receiver module that delivers professional-grade positioning in an exceptionally small form factor. This is the same chipset platform available through Eview’s mosaic-G5 series GNSS solutions.

AGR selected the mosaic-G5 P3 for four specific reasons:

• APME+ Advanced Multipath Mitigation — Septentrio’s proprietary algorithm that filters out reflected signals in urban canyons and near structures, maintaining reliable positioning where standard receivers fail
• Multi-frequency, multi-constellation reception — full use of GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC across all available frequencies, ensuring signal diversity and redundancy in partial sky-view environments
• AIM+ Advanced Interference & Spoofing Mitigation — automatic notch filtering that suppresses jamming signals in real time, critical for operations near 5G infrastructure, industrial equipment, and counter-UAV systems
• High-accuracy RTK positioning — centimetre-level accuracy enabling the tight flight path control required for agricultural spraying and facade work

In complex flight environments — near buildings, in mountainous terrain, or around electromagnetic interference — the mosaic-G5 P3 GNSS receiver module delivers the robust, high-precision navigation we rely on. Its multi-frequency performance and outstanding high-dynamic navigation capabilities integrate seamlessly with our systems to ensure robust and stable UAV operations.

Chen Liu, CTO — Hangzhou AGR Intelligent Technology Co., Ltd.

How Each Mission Type Benefits

Firefighting & Emergency Response UAVs

Mission-critical firefighting drones leave no margin for positioning error. The B100P deploys to building facades and elevated structures in dense urban settings where multipath interference from surrounding buildings is constant. APME+ Advanced Multipath Mitigation ensures the receiver filters out reflected signals and maintains stable positioning, while AIM+ protects against interference from emergency services radio equipment operating simultaneously in the same airspace.

High-Altitude & Mountainous Terrain Logistics

Delivering cargo across mountain race routes and remote logistics corridors demands reliable navigation even when satellite visibility is limited by terrain. The mosaic-G5 P3’s multi-frequency, multi-constellation architecture provides signal redundancy — if one signal band is blocked or degraded, others compensate. Combined with AGR’s GNSS/IMU fusion algorithms, the B100P maintains stable navigation along extended, complex mountain routes, reducing signal loss risk and improving logistics efficiency.

Precision Agricultural Spraying

Operating in mountainous orchards and terraced hillside fields, agricultural spraying drones need centimetre-level path accuracy to apply pesticides efficiently without over-spray or missed rows. Standard single-frequency GNSS receivers struggle with the signal blockages common in such terrain. The mosaic-G5 P3’s RTK capability and high-dynamic path optimisation support — integrated with AGR’s redundant navigation mechanisms — enable precise, safe passes even in heavily obstructed environments.

Urban Logistics & Facade Cleaning

Operating in dense urban areas means navigating some of the most electromagnetically hostile environments on earth — 5G base station clusters, industrial parks, and the cascading interference from multiple overlapping signal sources. AIM+ Advanced interference mitigation in the mosaic-G5 P3 continuously suppresses these signals, while AGR’s flight control system monitors navigation status in real time and adjusts redundant navigation strategies dynamically to maintain flight stability and safety throughout the mission.

Eview GNSS: Septentrio mosaic-G5 Modules for UAV Integrators

At Eview GNSS Technology, we build ready-to-deploy GNSS modules around the Septentrio mosaic-G5 platform — the same chipset AGR relies on in the B100P. Whether you are designing a multifunctional industrial drone, an agricultural spraying UAV, or an autonomous logistics platform, our solutions bring that same positioning performance to your product.

Recommended Products for UAV & Drone Applications

HBEV11 — Integrated Full-Band RTK GNSS Antenna (mosaic-G5)
All-in-one antenna-receiver in a 155 mm dome. Integrates the mosaic-G5 P3 receiver, LNA, SAW filter and full-frequency patch antenna in a single unit. M12-4P connector, 0.6 cm RTK, AIM+, ultra-low power (~0.44 W). Minimum integration effort for UAV airframes.

HB52H / HB52 — Ultralight Compact RTK GNSS Receiver with Heading, Pitch & Roll (mosaic-G5)
45 g dual-antenna receiver delivering heading, pitch and roll alongside 0.6 cm RTK. Built on Septentrio mosaic-G5 — designed specifically for UAVs and robotics platforms where attitude data matters as much as position.

Both carry Septentrio’s full resilience stack — AIM+, APME+, LOCK+, IONO+ and RAIM+ — making them directly suited to the complex, interference-heavy missions the AGR B100P was built for. Explore all Eview UAV GNSS solutions →

© Septentrio — This case study is based on the original customer story published by Septentrio. Read the full original article on Septentrio.com →