Product Description
AJAS-8 CRPA Anti-Jam GNSS
Choose the GNSS frequency coverage your platform needs, from L1 to L1/L2/L5/L6. The AJAS-8 family offers five configurations for evaluation and production programs.
The original AJAS-8 L1 model combines an 8-element CRPA, up to seven simultaneous interference nulls, an integrated GNSS receiver, and Galileo OSNMA navigation-message authentication. It provides navigation data and a protected RF output for integration with an existing receiver.
Available models
• AJAS-8 — L1
• AJAS-8-A — L1 / L2
• AJAS-8-B — L1 / L5
• AJAS-8-C — L1 / L2 / L5
• AJAS-8-D — L1 / L2 / L5 / L6
Signal coverage by model
The specifications and demonstrations below apply to the original AJAS-8 L1 model.
| Parameter | Value |
| Antenna Array | 8 |
| Simultaneous Independent Nulling | 7 |
| Jammer Suppression | 1 CW Jammer: > 65dB |
| 1 Wideband Jammer: 46dB | |
| 3 Wideband Jammers: 44dB | |
| 5 Wideband Jammers: 42dB | |
| 7 Wideband Jammers: 39dB | |
| Protected RF Output | GPS L1, GAL E1, BDS B1C, NavIC L1, QZSS L1, SBAS L1 |
| Internal Receiver | GPS L1, GAL E1, QZSS L1, SBAS L1 |
| Interface | UART, 1PPS, Jammer-Removed RF Output |
| Operating Temperature | -40 ~ +85 degC |
>65dB CW Jammer Suppression [66.5=(86.1/71.4-11.6)/2]
That -47dBm spur comes from PlutoSDR LO leakage.
50dB FMW Jammer Suppression
45.8dB 1 Wideband Jammer Suppression (45.8 = 110.1 - 64.3)
39.2dB 7 Wideband Jammer Suppression (39.2 = 94.7 - 55.5)
DOWNLOAD
Product Brief (PDF, ver 7, 20260926)
OTHER ITEMS OF INTEREST
Seeing CRPA Spatial Nulling In Action
SAP vs STAP
