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Dual 16‑Element GNSS Anti‑Jamming And Anti‑Spoofing Antenna

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Product Description

AJ‑SX370D is a dual‑frequency, dual‑16‑element GNSS protection antenna designed for civilian and commercial platforms that require dependable navigation in difficult RF environments. It combines interference suppression, spoofing resilience, multi‑constellation L1/L5 reception and real‑time RF awareness in a single integrated unit.

Product Overview

Navigation systems can fail in two very different ways: a jammer can overwhelm weak satellite signals, while a spoofing source can imitate legitimate signals and gradually pull the calculated position or time away from reality. AJ‑SX370D is engineered to address both challenges at the GNSS front end, helping the receiver distinguish, monitor and mitigate unwanted RF conditions before they disrupt platform navigation.

The antenna supports BDS B1I/B1C, Galileo E1, GPS L1 and GPS L5 frequency bands. Its dual‑16‑element array architecture is intended for platforms where standard single‑antenna GNSS reception is not sufficient, including industrial UAVs, autonomous ground systems, mobile mapping platforms, professional marine navigation, robotics and other lawful commercial applications.

Why Choose AJ‑SX370D

Dual‑frequency GNSS coverage supports BDS B1I/B1C, Galileo E1 and GPS L1/L5 signal reception, helping improve signal availability and navigation robustness.
Dual‑16‑element CRPA architecture provides high spatial resolution for RF interference suppression across complex signal environments.
Combined anti‑jamming and anti‑spoofing protection helps counter broadband, narrowband, pulse, swept‑frequency and combined suppression interference, as well as replay and generative spoofing.
Multi-source capability supports mitigation of 1–15 suppression interferers and processing of up to 8 spoofing sources arriving from different directions.
Real-time interference awareness reports jamming power, jamming source count and spoofing source count to support system monitoring and operational decisions.
Flexible integration supports built‑in receiver configuration or connection to an external receiver, with cleaned RF output after interference processing.
Rugged field design includes an IP65 or higher protection rating, a -40℃ to +70℃ operating range, and civil UAS shock/vibration test references.

Core Performance

Feature	AJ‑SX370D Capability
Product category	Dual-frequency GNSS anti-jamming and anti-spoofing antenna
Array configuration	Dual 16-element array
Supported GNSS bands	BDS B1I/B1C, Galileo E1, GPS L1/L5
Suppression interference types	Broadband, narrowband, pulse, swept-frequency and combined interference
Suppression interference sources	1–15 sources from different directions
Single broadband suppression	≥115 dB @ -130 dBm
Seven broadband suppressors	≥105 dB @ -130 dBm
Fifteen broadband suppressors	≥90 dB @ -130 dBm
Spoofing types	Replay spoofing and generative spoofing
Spoofing source processing	Up to 8 sources from different directions
RF awareness data	Jamming power, jammer count and spoofing source count

RF and Receiver Specifications

Parameter	Specification
RF output connector	SMA‑K
RF output level	-55 dBm to -70 dBm
RF impedance	50 Ω
Output VSWR	≤2.0
RF output bands	B1 / E1 / L1 + L5
Antenna port burnout resistance	≥10 W
Built-in receiver output	Position and velocity data through the data interface
Horizontal positioning accuracy	≤7 m, 95%, PDOP ≤4
Vertical positioning accuracy	≤9 m, 95%, PDOP ≤4
Velocity measurement accuracy	≤0.2 m/s, 95%

Electrical and Data Interfaces

Parameter	Specification
Operating voltage	DC 24V–36V
Typical power consumption	≤40 W, receiver continuous mode
Maximum power with AJ active	≤78 W
Power and data connector	J30J‑25ZKP, 25 pins
Default serial level	LVTTL 3.3V
Receiver data output	5 Hz, 115200 baud; UBX with PVT, DOP, SAT and TIMEGPS messages by default
Monitoring and upgrade links	RS232 interfaces for L1/L5 master and secondary chip support, plus interference-detection reporting

Mechanical and Environmental Data

Parameter	Specification
Dimensions	370 mm × 370 mm × 28 mm (±0.5 mm)
Weight	≤2800 g
Housing	Conductive oxidized aluminum body with silver-gray/white radome
Mounting	8 × M3 side mounting holes; four mounting brackets supplied
Operating temperature	-40℃ to +70℃, 10%–90% RH, non-condensing
Storage temperature	-45℃ to +85℃, 10%–95% RH, non-condensing
Ingress protection	IP65 or higher
Shock test reference	ISO 19453‑3:2018
Vibration test reference	ISO 5309:2023

Civilian Applications

AJ‑SX370D is designed for lawful civilian and commercial use in environments where navigation may be affected by dense infrastructure, industrial electromagnetic noise or unintended GNSS interference. Typical applications include:

Industrial UAVs and long-endurance drone platforms
Autonomous ground vehicles and mobile robotics
Mobile mapping, surveying and inspection systems
Professional marine navigation and unmanned surface vessels
High-value logistics and autonomous equipment
GNSS-dependent timing, monitoring and control systems

Installation Guidance

Mount the unit with the supplied brackets and fasteners, leaving sufficient airflow below the metal base for heat dissipation. The antenna’s receiving surface should face open sky with minimal obstruction. When mounted beneath a platform cover, use RF-transparent material with L-band transmission of at least 92% to reduce attenuation of useful GNSS signals.

For technical discussions, OEM/ODM requirements, interface customization or quotation requests, please contact us by email or WhatsApp. Our engineering team can help evaluate your operating environment and recommend an appropriate GNSS protection configuration.