1. 45 cm Double-D Coil — High Discrimination, High Stability, High Resolution

The 45 cm Double-D (DD) coil is the primary precision module of the BuraN 75 system. Its architecture employs two symmetrical “D”-shaped windings operating in differential mode to generate a uniform electromagnetic field and provide exceptional signal clarity.

Technical Advantages of the Double-D Coil

• Superior metal discrimination due to differential field processing

• Stable detection in high-mineral soil (basaltic, salty, clay-rich)

• Reduced electromagnetic noise coupling

• Improved lateral target identification

• Accurate centerline pinpointing with symmetrical field geometry

• Constant sensitivity across the entire sweep width

Why DD Coils Excel in Professional PI Systems

Double-D coils produce extremely consistent electromagnetic coverage. Unlike mono coils that develop signal “hot spots,” the DD field geometry allows the BuraN 75 to maintain stable discrimination and reliable target separation. This is especially critical in archaeological sites where metallic debris, soil layering, and mixed targets complicate identification.

The 45 cm coil is optimized for:

• Mid-depth anomalies

• Complex ground conditions

• Targets requiring discrimination

• Precise 2D mapping before deeper scans

2. 125 cm Deep-Penetration Coil — Maximum Depth Capability

The 125 cm coil is a large-aperture deep-search module engineered for volume detection at depths reaching 4 meters in real field conditions. Its configuration maximizes electromagnetic field penetration while maintaining a controlled decay profile suitable for large metallic masses and deeply buried structures.

Technical Characteristics

• Very large electromagnetic footprint

• Ideal for large relics, metallic masses, deep caches

• Consistent decay curve for accurate depth modeling

• Compatible with automatic or manual ground balance

• Lower discrimination capability (normal phenomenon for deep PI coils)

• Exceptional stability due to optimized winding resistance and shielding

Ground Balance Mechanisms

Automatic Ground Balance (AGB):
Continuous adaptive compensation that analyzes soil mineral content and adjusts baseline offsets in real time.

Manual Ground Balance (MGB):
Allows expert operators to fine-tune the electromagnetic baseline to suppress specific ground responses while amplifying large deep targets. Used in extreme mineralization or conductive soil environments.

The 125 cm coil transforms BuraN 75 into a true deep-search system, capable of detecting deeply buried metallic structures that smaller coils cannot register.

3. Optional Magnetometric Gradiometer — Structural Anomaly, Void & Ferrous Signature Detection

The BuraN 75 can be expanded with a high-sensitivity magnetometric gradiometer, turning the system into a dual-physics geophysical platform.

Magnetometric Capabilities

• Detection of voids, tunnels, chambers, and cavities

• Identification of ferrous metallic objects (even extremely deep or irregular)

• Mapping of geomagnetic gradient variations

• Structural mapping under archaeological sites

• Tracking soil disturbances and man-made modifications

The gradiometer employs vertical magnetic gradient measurement, allowing the system to register changes in magnetic susceptibility that correspond to underground structures—even when they contain little or no metal.

Integration Advantages

• Operates independently from the PI coils

• Complements electromagnetic (PI) data with magnetic data

• Enhances 3D and 4D reconstruction accuracy

• Allows simultaneous geological, metallic, and cavity analysis

This module significantly broadens the analytical capabilities of BuraN 75 for scientific, archaeological, and engineering applications.

4. Android Integration — 3D, 4D, and Real-Time Geological Modeling

BuraN 75 supports full connectivity with Android devices via a dedicated communication interface, transforming the system into a portable geophysical analysis workstation.

Software Features

• Real-time 2D signal graphs

• 3D volumetric reconstruction of metallic and magnetic anomalies

• 4D comparative analysis (time-lapse scanning)

• Digital depth estimation with volumetric indexing

• Multi-pass correlation for reliability verification

• GPS mapping and geo-referencing

• Data export to specialized archaeological or geophysical suites

Android integration allows operators to visualize subsurface structures directly in the field with professional-level accuracy.

5. Pulse Induction Engine — High Voltage, Long Decay, Deep Return Sampling

The BuraN 75’s PI engine uses a high-energy pulsed waveform and long sampling window to detect low-conductivity or deeply buried metal masses.

Core PI Engine Features

• High-voltage excitation pulse

• Wide-band receiving window

• Long decay sampling for maximum depth

• Adaptive gain control

• Ground phase cancellation

• Multi-stage digital filtering

• Automatic electromagnetic background suppression

The engine maintains excellent detection performance under:

• Basaltic soils

• Wet, conductive environments

• High-salinity areas

• Electrically noisy archaeological locations

This results in exceptionally clean return signals, even at maximum depth.

6. Environmental Adaptation & Mechanical Reliability

BuraN 75 is engineered for extended professional field deployment.

Resistant To:

• Soil mineralization

• Electromagnetic interference

• Moisture and humidity

• Temperature fluctuations

• Physical impact and vibration

Operational Advantages

• Rapid coil switching

• Stable performance after long sessions

• Robust connectors and shielded cables

• Dustproof and moisture-resistant housing

The system maintains measurement stability over long-term usage and under challenging field conditions.

7. Professional Applications

Archaeology & Heritage Research

• Chamber & void location

• Detection of buried structures

• Mapping metallic and non-metallic anomalies

Deep Treasure Search

• Large metallic relics

• Deep caches

• Historical weaponry, tools, coins, and artifacts

Geophysical & Engineering Surveys

• Geological discontinuities

• Magnetic anomalies

• Soil disturbance mapping

• Early-stage infrastructure inspection