01 — Survey
Solar & terrain mapping
Reliable BDS / GPS / Galileo fixes over mountainous solar farms and dense canopy.
Multi-constellation · 4-ch
BDS · GPS · Galileo · CRPA
Integrated navigation anti-jamming units.
Mission-grade GNSS resilience for drones, USVs, UGVs and high-precision platforms. Proprietary multi-channel CRPA units suppress wideband, narrowband, sweep and pulse interference — keeping your platforms on mission in contested airspace.
Proprietary
Anti-jamming algorithm
- 7
- AJU models
- 115 dB
- Peak J/S
- −40~+70°C
- Operating temp
In the field
Where our GNSS earns its keep
From spray booms to burning refineries — a snapshot of the environments where CHREDSUN anti-jamming units keep the fix locked in.
04Cases
02 — Energy
Power line inspection
Steady positioning near high-voltage EMI and complex tower geometries.
≥ 95 dB jammer suppression
03 — Agriculture
Precision agriculture
Centimeter-accurate spray lines across rolling terrain — even under intentional GNSS interference.
RTK ±1 cm · 20 Hz
04 — Response
Emergency response
IP67 hardened for smoke, heat and rain — the fix holds when everything else fails.
IP67 · −40 → 85 °C
Why CHREDSUN
Built for contested electromagnetic environments
Full-band GNSS coverage
Simultaneous reception across BDS B1, GPS L1 and Galileo E1 for robust multi-constellation positioning.
Multi-source suppression
Defeats wideband, narrowband, swept-frequency, pulsed and combined interference — up to 15 simultaneous jammers.
Compact & lightweight
Optimised materials and miniaturised RF chain — from 120 g micro units up to 16-channel command units.
Field-hardened
Validated from −40 °C to +70 °C with salt-fog, vibration and EMC testing in our in-house reliability lab.
AJU Series
Seven units. One anti-jamming family.
From palm-sized micro units to strategic command-grade installations — pick the AJU unit that matches your platform, channel count, and threat profile.
4–16 channelsUp to 115 dB J/S−40 / +70 °C
4-channel
AJU-4050
Micro Unit
Micro UAVs
- Dimensions
- 50 × 50 × 21.3 mm
- Weight
- ≤ 120 g
- J/S Ratio
- ≥ 95 dB
- Multi-source
- 1–3 sources
4-channel
AJU-4065
Compact Unit
Small UAVs
- Dimensions
- 65 × 65 × 23.7 mm
- Weight
- ≤ 200 g
- J/S Ratio
- ≥ 115 dB
- Multi-source
- 1–3 sources
4-channel
AJU-4100D
Extended Compact Unit
Small / medium UAVs
- Dimensions
- 100 × 100 × 24.5 mm
- Weight
- ≤ 400 g
- J/S Ratio
- ≥ 115 dB
- Multi-source
- 1–3 sources
8-channel
AJU-8130
Heavy-lift Unit
Heavy-lift UAVs, complex EM environments
- Dimensions
- 130 × 130 × 23.7 mm
- Weight
- ≤ 500 g
- J/S Ratio
- ≥ 115 dB
- Multi-source
- Up to 7 sources
8-channel
AJU-8160D
Extended Heavy-lift Unit
Heavy-lift / multi-payload UAVs
- Dimensions
- 160 × 160 × 24.5 mm
- Weight
- ≤ 1000 g
- J/S Ratio
- ≥ 115 dB
- Multi-source
- Up to 7 sources
16-channel
AJU-X200
Command Unit
Large UAVs, ground stations, border surveillance
- Dimensions
- 200 × 200 × 26 mm
- Weight
- ≤ 1200 g
- J/S Ratio
- ≥ 115 dB
- Multi-source
- Up to 15 sources
16+ channel
AJU-X300D
Strategic Command Unit
Fixed installations, C2 & surveillance
- Dimensions
- 300 × 300 × 27.6 mm
- Weight
- ≤ 2100 g
- J/S Ratio
- ≥ 115 dB
- Multi-source
- Up to 15 sources
Product introduction
Product composition
and features
The navigation anti-interference integrated machine is composed of an antenna cover, antenna array, guardrail, waterproof ring, array mounting plate, PCBA board, middle frame, mounting accessories, J30J (data connector), SMA (radio frequency connector), and corresponding assembly screws.
Our anti-jamming antennas are not only used on UAVs, UGVs and USVs, but are also supplied to end customers for civil and commercial applications — essentially the same class of users as drone operators.
Fig.01 · Anti-jamming unit — exploded assembly
Eleven precision-engineered components
Every AJU unit ships as a sealed, vibration-resistant stack — hover a number on the diagram or tap a card to explore each part.
Integration
Two installation paths
Drop the AJU unit in as an anti-jamming antenna, or as a fully integrated antenna + GNSS receiver — whichever matches your platform architecture.
01Two methods02
01
RF interface method
Drop-in antenna replacement
Use the AJU as an anti-jamming navigation antenna feeding your existing GNSS receiver. Replaces the standard navigation antenna with no host-side changes.
Anti-jamming antenna
GNSS receiver
Main control unit
02
Digital interface method
Antenna + receiver in one
The AJU acts as an integrated unit, replacing both the navigation antenna and the GNSS receiver. Positioning solution output direct to your main control unit.
Anti-jamming antenna + receiver
Main control unit
20 years in satellite navigation
Fully proprietary anti-jamming technology — BDS, GPS, GLONASS and Galileo
MES productionIn-house validationReliability lab
Manufacturing & test capability
End-to-end engineering, manufacturing and validation — under one roof
01Manufacturing
MES-driven production
- Full-process control from planning to delivery
- Anti-static workshops, SOPs posted at every workstation
- End-to-end batch and serial traceability
- GNSS production-line automated test system
02Validation
In-house validation
- Starry Sky anechoic chamber — complex EM simulation
- RealStar outdoor live-sky test base
- RNSS satellite signal simulators
- JHCRA-3S interference source, SAS 6842A IF playback
03Reliability
Reliability & environmental lab
- Temperature cycling −40 °C / +70 °C
- Salt-fog and humidity exposure
- Mechanical vibration profiles
- EMC and three-proof validation
Quality workflow
- Step 1Incoming RF screening
Vector signal source & spectrum-analyser inspection of every batch.
- Step 2In-line MES test
Automated GNSS test line with full-process traceability.
- Step 3Environmental burn-in
Temperature, vibration and salt-fog cycling per profile.
- Step 4Final acceptance
Live-sky verification before serial release to the customer.
Applications
From UAVs to ground stations — wherever GNSS must not fail
Designed for civil unmanned platforms and high-precision positioning across commercial, industrial and surveying applications.
01
Drone navigation
02
High-precision mapping
03
Autonomous driving
04
Power inspection
05
Forestry protection
06
Agricultural spraying
07
Logistics delivery
08
Disaster relief
Need anti-jamming GNSS for your platform?
Talk to our engineers about integration, custom unit configurations and volume pricing.
Contact
Request a quote
Tell us about your platform and we'll come back with a recommended unit, lead time and quote — typically within one business day.
- Emailsales@chredsun.com
- Tel+86-755-8619 7905
- WhatsApp+86 136 8246 8713
- Head officeBaode Industrial Center, Lixinnan Road, Fuyong Street, Baoan District, Shenzhen, China