Full Report
Photos and video of a 32-element CRPA antenna removed from a Geran-4 drone that crashed in Ukraine have recently been circulating on Telegram. Until now,…
Analysis Summary
# Tool/Technique: 32-Element CRPA (Controlled Reception Pattern Array) Antenna
## Overview
This tool is a sophisticated anti-jamming satellite navigation antenna integrated into the **Geran-4** and **Gerbera** unmanned aerial vehicles (UAVs). Its primary purpose is to maintain GNSS (Global Navigation Satellite System) signal integrity in environments where electronic warfare (EW) and jamming are active. By utilizing 32 elements, the antenna can create more precise "nulls" in the direction of jamming signals, significantly enhancing the drone's resilience against Ukrainian electronic countermeasures.
## Technical Details
- **Type:** Hardware / Electronic Warfare Countermeasure
- **Platform:** Geran-4 (Shahed-variant) and Gerbera attack drones
- **Capabilities:** High-density spatial filtering, anti-jamming, GNSS signal protection
- **First Seen:** Publicly documented via crash site analysis in Ukraine, late September 2024 (Article date October 2026 refers to ongoing reporting).
## MITRE ATT&CK Mapping
*Note: As this is a physical hardware component facilitating kinetic operations, mappings refer to the electronic warfare and navigation disruption avoidance phase.*
- **[TA0009 - Collection / TA0007 - Discovery]** (Relative to positioning)
- **[T1612 - Build, Recruit, or Arming]** (Resource Development: Localizing production of specialized components)
- **[T1498 - Network Denial of Service]** (Counter-measure: Resisting Signal Interference/Jamming)
## Functionality
### Core Capabilities
- **Anti-Jamming:** Utilizes Controlled Reception Pattern Array (CRPA) technology to ignore interference from electronic warfare systems.
- **Enhanced Signal Processing:** The 32-element configuration allows the device to suppress a greater number of simultaneous interference sources compared to previous 8-element or 16-element versions.
- **GNSS Navigation:** Provides reliable positioning data for autonomous flight paths.
### Advanced Features
- **Localization/Indigenization:** The housing features "ALB" engravings, indicating localized assembly or manufacturing within the Alabuga Special Economic Zone (Russia) rather than simple off-the-shelf acquisition.
- **Scalability:** Design architecture allows for transition from 16-element to 32-element arrays within similar physical form factors, increasing defense capabilities without radical airframe redesign.
## Indicators of Compromise
*Note: Indicators for physical hardware focus on markings and component origin.*
- **Physical Markings:** "ALB" (Alabuga) engraved directly into the metal housing.
- **Hardware Origin:** Resembles designs from **Harxon Corporation** (China).
- **Component Evolution:** Transition from Chinese-language stickers to Russian-language instructional stickers on internal PCBs (Printed Circuit Boards).
## Associated Threat Actors
- **Russian Federation Forces** (Deployment)
- **Alabuga Special Economic Zone** (Production/Assembly)
- **Harxon Corporation** (Design/Component Supply)
## Detection Methods
- **Signature-based detection:** Identification of specific radio frequency (RF) emissions or physical identification of crashed wreckage.
- **Behavioral detection:** Observation of UAVs maintaining flight paths despite high-intensity localized GNSS jamming (indicating the presence of high-element CRPA).
- **Supply Chain Monitoring:** Tracking customs records for high-frequency antenna components and specialized connectors associated with Harxon.
## Mitigation Strategies
- **Electronic Warfare Evolution:** Developing multi-frequency or more powerful broad-spectrum jamming to overwhelm high-element count CRPA arrays.
- **Kinetic Interception:** Increased reliance on physical destruction (AD systems) as electronic soft-kill methods become less effective against 32-element arrays.
- **Sanctions & Interdiction:** Targeting the supply chain of Harxon components and their proxies to prevent the acquisition of high-element PCBs and connectors.
## Related Tools/Techniques
- **Kometa-M:** A widely documented 4-element Russian CRPA antenna.
- **Gerbera Drones:** A smaller, multi-purpose drone variant also utilizing these upgraded antenna systems.
- **Harxon 16-element CRPA:** The predecessor to the current 32-element model.