4-Element Anti-jamming Terminal Enhanced Performance Version — Dual-band B1I B1C L1C and G1

Short Description:

Anti-Jamming Capability:
ISR: Single≥105dBc Three≥95dBc
Measurement: 150x130x21mm
Power Consumption: ≤12w
Weight: ≤ 400g
Output signal frequency: 1561.098MHz1575.42MHz1602MHz
Supported GNSS constellations：BDS-B1I&B1C,GPS-L1C/A,GAL-E1,GLONASS-L1

Product Detail

Product Tags

Product Introduction

Product Overview

The BGS-4CH-EPV-G1-03 is a miniaturized satellite navigation anti‑jamming integrated terminal designed for civilian drones and industrial users. As an Enhanced Performance Version, it supports three global navigation satellite systems: BeiDou (B1), GPS (L1), and GLONASS (G1). The terminal integrates a 4‑element antenna array, high‑performance anti‑jamming processing module, and a GNSS receiver. It can simultaneously resist broadband jamming against all three systems, with a maximum jamming tolerance of 3 simultaneous interferers.
This device significantly enhances PNT (Positioning, Navigation, Timing) information security, protecting user terminals from unintentional interference and malicious attacks in demanding environments.

Key Features

1. RNSS Signal Reception

Receives BeiDou, GPS, and GLONASS navigation satellite signals
Civil codes: BDS‑B1, GPS‑L1, GLONASS‑G1

2. Anti‑jamming Capability (Enhanced Performance)

Provides anti‑jamming for BDS, GPS, and GLONASS systems
Suppresses narrowband, broadband, pulse, swept frequency, Gaussian, and other types of jamming
Unidirectional jamming tolerance: ≥105 dB
Three‑direction jamming tolerance: ≥95 dB

3. Built‑in Navigation & Positioning Module

Full‑band positioning solution; outputs standard NMEA‑0183 protocol data (position, velocity, timing)

4. Dual Output Modes

Serial port output (positioning data) or RF output (cleaned anti‑jammed RF signal) – flexible integration with different backend devices

5. Software Upgrade

Field upgradeable via serial port for both the anti‑jamming module and the receiver module

6. System Self‑Test

Power‑on self‑test and continuous status monitoring

7. Fire Resistance (High Power Survival)

Continuous wave withstand power: ≥10 W

8. Safety Protections

Overvoltage protection and reverse connection protection

Electrical & Performance Specifications

Parameter	Value
Operating Frequency	BDS‑B1: 1561.098 MHz GPS‑L1: 1575.42 MHz GLONASS‑G1: 1602 MHz
Anti‑jamming Performance	Unidirectional: ≥105 dB 3‑direction: ≥95 dB
Positioning Accuracy	Horizontal ≤1.5 m
Velocity Accuracy	≤0.2 m/s
Timing Accuracy	≤100 ns
Operating Voltage	5 – 17 V DC (12 V recommended)
Power Consumption	≤12 W

Interface Definition

Power / Data Connector (J30J‑9ZK core)

Pin	Name	Direction	Level	Remarks
1,2	VCC (+)	Input	5–17 V	12 V recommended
3,4	GND (-)	Input	–	Power ground
5	RXD0	Input	TTL	Upgrade / receiver serial port
6	TXD0	Output	TTL	Positioning data output (NMEA)
7	RXD1	Input	TTL	Anti‑jamming module serial port
8	TXD1	Output	TTL	Anti‑jamming status
9	GND	Input	TTL	Signal ground

RF Interface

Connector type: SMA (single coax)
Output signal: L1/B1/G1 band, level -70 ~ -60 dBm
Function: Provides cleaned anti‑jammed RF signal for direct connection to a backend GNSS receiver

Mechanical & Environmental Specifications

Item	Specification
Dimensions	150 mm × 130 mm × 21 mm
Weight	≤400 g
Color	French grey
Operating Temperature	-40°C ~ +55°C
Storage Temperature	-55°C ~ +70°C
Relative Humidity	96% RH at 40°C
Rain Test	Meets GJB150A requirements

Typical Application Scenarios

Time synchronization security in power, telecommunications, and finance
Navigation safety for drones, unmanned vehicles, and unmanned ships
Fleet defense and navigation security
High‑end logistics navigation safety

Installation & Use

Mounting

Secure using M3 screws.

Power Supply

XT30 connector; input voltage 5–17 V DC (max 17 V, 12 V recommended).

Data Connection (choose one of two modes)

Mode 1: Serial output (direct connection to flight controller)

Use the provided data cable to connect the TTL serial port to the flight controller’s GNSS serial port:
- TX → FC RX
- RX → FC TX
- GND → FC GND
Outputs NMEA‑0183 positioning data.

Mode 2: RF output

Connect the product’s RF port (SMA) to the drone’s antenna input port using an SMA cable.
Important: The connected device must NOT supply more than 5 V to this RF port, otherwise damage may occur.

⚠️ When using a USB‑to‑TTL tool to connect to a computer, do not plug or unplug the USB while powered to avoid damaging the serial port.

Flight Controller Protocol Compatibility

The product outputs the NMEA 0183 standard protocol, compatible with mainstream flight controllers (e.g., Pixhawk, ArduPilot) via GNSS serial port.

Disclaimer

This product is designed to enhance satellite navigation security. Please comply with all applicable laws and regulations during use. Any illegal activities carried out using this product are not related to the product or its manufacturer.

BGS-4CH-EPV-G1-03 – Tri‑system, enhanced performance, lightweight design for superior anti‑jamming navigation protection