4 Channels Navigation Anti-Jamming Terminal Dual Bands Protection
This four-channel anti-jamming terminal is a complete navigation protection unit rather than a bare antenna module, combining the adaptive array, the RF front end and the processing that drives the nulling into one enclosure. It delivers 90dBc of single-direction interference suppression across two frequency bands, and is sized for platforms where a full eight-element array is more capability than the mission needs.
Terminal Rather Than Module
Because the terminal integrates its own front end and adaptive processing, it presents a clean protected signal to the host receiver without requiring the integrator to supply a beamforming subsystem. That shortens integration work considerably: the terminal takes power and outputs a protected GNSS feed, and the receiver behind it operates exactly as it would with a conventional antenna.
Dual-Band Coverage
Protection spans BeiDou B1, GPS L1, Galileo E1 and GPS L2. Covering both the L1-class band and L2 keeps the host receiver in a dual-frequency solution under attack, which preserves ionospheric correction and therefore full positioning accuracy. Single-band protection would leave the receiver able to hold a fix but degraded, which is often not sufficient for survey or precision guidance work.
90dBc Suppression on Four Channels
Single-direction interference rejection is 90dBc, the same suppression depth as the eight-element unit; the difference is how many emitters can be nulled at once. Four channels place up to three independent nulls, covering the common case of one or two ground-based jammers in the operating area. Nulling is based on direction of arrival, so it defeats interference sitting on the same frequency as the satellite signal, which frequency filtering cannot touch.
Anti-Jam and Anti-Spoof
Broadband jamming raises the noise floor until tracking fails. Spoofing is quieter: a counterfeit but coherent signal is accepted as genuine and the platform navigates to a false position. Both originate from a transmitter at or near ground level rather than from the constellation overhead, so the same direction-of-arrival discrimination defeats both without needing to distinguish them in the frequency domain.
Key Features
- 4-channel adaptive anti-jamming terminal, complete unit
- Dual-band protection: BeiDou B1, GPS L1, Galileo E1, GPS L2
- 90dBc single-direction interference suppression
- Nulls up to 3 simultaneous interference sources
- Integrated RF front end and adaptive processing
- Outputs a protected GNSS feed, no beamformer needed
- Effective against both jamming and coherent spoofing
- Maintains dual-frequency accuracy under attack
- Lighter and lower cost than the 8-element array
- Host receiver needs no firmware modification
- Customisation available for band plan and interfaces
- Suitable for UAV, vehicle and fixed installation
Specifications
| Parameter | Value |
|---|---|
| Channels | 4 |
| Bands | BeiDou B1 / GPS L1 / Galileo E1 / GPS L2 |
| Band Configuration | Dual band |
| Single-Direction Interference Suppression | 90 dBc |
| Simultaneous Nulls | up to 3 |
| Antenna Principle | adaptive controlled reception pattern array |
| Integration Level | complete terminal with front end and processing |
| Output | protected GNSS feed to host receiver |
| Customization | Available |
| Threats Countered | jamming and spoofing |
| Product Type | navigation anti-jamming terminal |
Applications
- Commercial and industrial UAV navigation protection
- Powerline, pipeline and rail infrastructure inspection
- Survey and mapping requiring dual-frequency accuracy
- Public safety, police and search and rescue flights
- Vehicle-mounted GNSS position and timing protection
- Border area and checkpoint patrol
- Precision agriculture over large managed areas
- Fixed installation reference receiver protection
- GNSS receiver resilience testing
Selection Guidance
Choose channel count by how many simultaneous emitters the operating area is expected to contain, not by how strong the jamming is: suppression depth is 90dBc in both this terminal and the eight-element module, but four channels run out of nulls at three emitters. Where a defended site operates several jammers covering different sectors, specify the eight-element unit; for incidental interference or a single emitter, this four-channel terminal is the lighter and more economical choice.
Contact us for pricing and delivery:
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Telegram: @uaboron
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