Description
The AJU-4050 is the smallest unit in the range: a 50 x 50 x 21.3 mm controlled reception pattern antenna that integrates the array, the anti-jamming processor, a GNSS receiver and the cable set in one sealed housing. It receives BDS B1, GPS L1 and Galileo E1, suppresses one to three broadband, narrowband, pulse or sweep jammers, and outputs both a protected RF signal and a ready-to-use PVT solution over a single J30J connector.
Key features
- Four-element controlled reception pattern array in a 50 x 50 mm footprint.
- Single-jammer J/S >= 95 dB and three-jammer J/S >= 80 dB at -130 dBm.
- Built-in receiver outputs NMEA position, velocity and time at 5 Hz, so no external GNSS card is needed.
- Protected RF output of -55 to -70 dBm into 50 ohm for feeding an external receiver.
- DC 9-36 V input with <= 6 W consumption; RS422 or LVTTL 3.3 V serial selectable.
- IP65 housing, -40 C to +70 C operating range, >= 10 W antenna port burn-out protection.
- Supplied with J30J cable and M3 screw set; L5 and G1 frequency options available.
Specifications
| Model | AJU-4050 |
|---|---|
| Type | Miniature four-element CRPA, integrated navigation anti-jamming unit |
| Channels | 4 |
| Frequencies (default) | BDS B1 / GPS L1 / Galileo E1 (L5 optional) |
| Anti-jamming, 1 jammer | J/S >= 95 dB @ -130 dBm |
| Anti-jamming, 3 jammers | J/S >= 80 dB @ -130 dBm |
| Jammer types | Broadband, narrowband, pulse, frequency sweep and combinations |
| Spatial coverage | Azimuth 0-360 deg, elevation -10 to +90 deg |
| Built-in receiver | PVT output, NMEA GGA/GSV/RMC/VTG/ZDA, 5 Hz, 115200 bps |
| Position accuracy | <= 7 m horizontal, <= 9 m vertical (95 %, PDOP <= 4) |
| Velocity accuracy | <= 0.2 m/s (95 %) |
| RF output | -55 to -70 dBm, 50 ohm, VSWR <= 2.0 |
| Burn-out protection | >= 10 W at the antenna port |
| Supply / consumption | DC 9-36 V, <= 6 W |
| Interfaces | J30J-9ZK + SMA; RS422 or LVTTL 3.3 V |
| Dimensions | 50 x 50 x 21.3 mm (+/-0.5 mm) |
| Weight | <= 120 g |
| Protection | IP65 |
| Temperature | -40 C to +70 C |
Typical applications
- Man-portable radios and ruggedised tablets that must keep a fix under jamming.
- Small UAV and loitering platforms with a tight weight and volume budget.
- Vehicle and vessel navigation where the antenna sits in an exposed position.
- Secure timing for base stations and network equipment.
Integration and supply
Supplied by SeekerGimbal (Wuhan Xinghang Technology) with English datasheet, mechanical drawing and interface definition. Serial level (RS422 or LVTTL), frequency set (adding L5 or G1) and cable length are configured at the factory. Export documentation, spare cables and engineering samples available for programme evaluation.
Technical FAQ and procurement notes
Specification summary
| Position accuracy | <= 7 m horizontal, <= 9 m vertical (95 %, PDOP <= 4) |
|---|---|
| Weight | <= 120 g |
| RF output | -55 to -70 dBm, 50 ohm, VSWR <= 2.0 |
Frequently asked questions
What is the AJU-4050?
The AJU-4050 is a CRPA anti-jamming antenna. 50 x 50 x 21 mm, 120 g four-element CRPA with built-in GNSS receiver and 95 dB single-jammer suppression for man-portable and small-UAV navigation.
What are the key technical specifications of the AJU-4050?
Per the datasheet: Position accuracy — <= 7 m horizontal, <= 9 m vertical (95 %, PDOP <= 4); Weight — <= 120 g; RF output — -55 to -70 dBm, 50 ohm, VSWR <= 2.0.
What environmental conditions is the AJU-4050 rated for?
The AJU-4050 is sealed to IP65 and rated -40 °C to +70 °C, so it can be mounted on the vehicle or platform exterior without a separate environmental enclosure.
What applications is the AJU-4050 used for?
Man-portable radios and ruggedised tablets that must keep a fix under jamming. Small UAV and loitering platforms with a tight weight and volume budget. Vehicle and vessel navigation where the antenna sits in an exposed position. Secure timing for base stations and network equipment.
What documentation and configuration support is included with the AJU-4050?
Supplied by SeekerGimbal (Wuhan Xinghang Technology) with English datasheet, mechanical drawing and interface definition. Serial level (RS422 or LVTTL), frequency set (adding L5 or G1) and cable length are configured at the factory. Export documentation, spare cables and engineering samples available for programme evaluation.
How do I request a quotation for the AJU-4050?
Email sales@seekergimbal.com or use the contact form with your platform, target set and required interface; a specification-matched quotation is returned within 24 hours.
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