Description
The AJU-4100D is a dual four-element array: two four-element sub-arrays on a 100 x 100 mm base plate, which raises gain and widens the anti-jamming aperture without doubling the footprint. It covers BDS B1, GPS L1, Galileo E1 and L5, delivering 105 dB single-jammer and 90 dB three-jammer suppression. L5 support matters on this model because it gives a second civil frequency for ionospheric correction and for continued operation when one band is being jammed.
Key features
- Dual four-element array, 100 x 100 x 24.5 mm, 400 g.
- B1 / L1 / E1 + L5 two-band coverage as standard.
- Single-jammer J/S >= 105 dB, three-jammer J/S >= 90 dB at -130 dBm.
- Higher gain and wider coverage than the single four-element units.
- Built-in receiver with PVT output; protected RF output also available.
- DC 12-36 V, <= 14 W; IP65; -40 C to +70 C.
Specifications
| Model | AJU-4100D |
|---|---|
| Type | Dual four-element CRPA, integrated navigation anti-jamming unit |
| Channels | 4 (two four-element sub-arrays) |
| Frequencies (default) | BDS B1 / GPS L1 / Galileo E1 + L5 |
| Anti-jamming, 1 jammer | J/S >= 105 dB @ -130 dBm |
| Anti-jamming, 3 jammers | J/S >= 90 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, 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 12-36 V, <= 14 W |
| Interfaces | J30J-9ZK + SMA; RS422 or LVTTL 3.3 V |
| Dimensions | 100 x 100 x 24.5 mm (+/-0.5 mm) |
| Weight | <= 400 g |
| Protection | IP65 |
| Temperature | -40 C to +70 C |
Typical applications
- Platforms that need ionospheric correction or dual-band robustness.
- Vehicle and maritime navigation under deliberate jamming.
- Fixed-site timing and network synchronisation.
- UAV with a 100 mm antenna pad.
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 | <= 400 g |
| RF output | -55 to -70 dBm, 50 ohm, VSWR <= 2.0 |
Frequently asked questions
What is the AJU-4100D?
The AJU-4100D is a CRPA anti-jamming antenna. 100 x 100 x 24.5 mm dual four-element CRPA covering B1/L1/E1 plus L5, with 105 dB single-jammer suppression and a built-in receiver.
What are the key technical specifications of the AJU-4100D?
Per the datasheet: Position accuracy — <= 7 m horizontal, <= 9 m vertical (95 %, PDOP <= 4); Weight — <= 400 g; RF output — -55 to -70 dBm, 50 ohm, VSWR <= 2.0.
What environmental conditions is the AJU-4100D rated for?
The AJU-4100D 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-4100D used for?
Platforms that need ionospheric correction or dual-band robustness. Vehicle and maritime navigation under deliberate jamming. Fixed-site timing and network synchronisation. UAV with a 100 mm antenna pad.
What documentation and configuration support is included with the AJU-4100D?
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-4100D?
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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