4-Element Anti-jamming Terminal Ultra compact version Single frequency B1I L1C

Short Description:

Anti-Jamming Capability:
ISR: Single≥95dBc Three≥80dBc
Measurement: 65x65x21mm
Power Consumption: ≤6w
Weight: ≤ 130g
Output signal frequency: 1561.098MHz1575.42MHz
Supported GNSS constellations：BDS-B1I,GPS-L1C/A ,GAL-E1

Product Detail

Product Tags

Product Introduction

Product Overview

The BGS-4CH-UCV-04 is an ultra‑miniaturized satellite navigation anti‑jamming integrated terminal designed specifically for small and medium‑sized UAVs and other space‑constrained industrial applications. It supports anti‑broadband jamming and positioning functions on BDS B1 and GPS L1 frequency points. The device integrates a 4‑element antenna array, anti‑jamming components, and a GNSS receiver into an extremely compact form factor, offering miniaturization, lightweight design, and low cost without compromising core anti‑jamming performance.

Key Features

1. RNSS Signal Reception

Receives navigation signals from BeiDou‑3 and GPS satellites
Civil codes: BDS B1, GPS L1

2. Anti‑jamming Capability

Provides anti‑jamming on B1 and L1 frequency points
Suppresses narrowband, broadband, pulse, swept frequency, Gaussian, and other types of jamming
Unidirectional jamming tolerance: ≥95 dBc
Two‑direction jamming tolerance: ≥85 dBc
Three‑direction jamming tolerance: ≥80 dBc

3. Software Upgrade

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

4. System Self‑Test

Power‑on self‑test and continuous status monitoring

5. Anti‑burn (Fire Resistance)

Continuous wave withstand power: ≥10 W

Electrical & Performance Specifications

Parameter	Value
Operating Frequency	B1I: 1561.098 MHz / L1: 1575.42 MHz
Anti‑jamming Performance	Unidirectional: ≥95 dBc Two‑direction: ≥85 dBc Three‑direction: ≥80 dBc
Positioning Accuracy (no jamming)	Horizontal ≤1.5 m, Vertical ≤1.5 m
Positioning Accuracy (with jamming)	Horizontal ≤10 m, Vertical ≤10 m
Velocity Accuracy	0.2 m/s (95%)
Timing Accuracy	≤100 ns (95%)
Operating Voltage	5 – 17 V DC (12 V recommended)
Power Consumption	≤6 W

Interface Definition

No.	Code Name	Connector Model	Functional Description
1	TX	SMA‑KF D	GNSS RF output port (reserved)
2	Data	J30J‑9ZKP	5–17 V power input + serial port

Power / Data Connector (J30J‑9ZK core)

Pin	Name	Direction	Level	Remarks
1	Power positive (+)	Input	5–17 V	12 V recommended
2	Power positive (+)	Input	5–17 V	12 V recommended
3	Power positive (+)	Input	–	–
4	Power positive (+)	Input	–	–
5	RXD0	Input	TTL	Upgrade serial port
6	TXD0	Output	TTL	Positioning data output
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 (reserved, single coax)
Output signal: B1/L1 band, level -70 ~ -60 dBm
Function: Provides cleaned anti‑jammed RF signal

Mechanical & Environmental Specifications

Item	Specification
Dimensions	65 mm × 65 mm × 21 mm
Weight	≤130 g
Color	Gray
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 UAVs, unmanned vehicles, and unmanned ships
Convoy defense and navigation security
High‑end logistics navigation security

Installation & Use

Mounting

Secure using M2 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 positioning data (NMEA or UBX protocol).

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

This product outputs NMEA protocol or UBX protocol. The flight controller must be configured to receive either of these protocols. Please coordinate protocol integration with our technical team before placing an order.

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-UCV-04 – Ultra‑compact, lightweight, and cost‑effective anti‑jamming navigation protection for small UAVs and space‑limited platforms