Explorer v.AUV

UXO Trial
San Diego Bay

We tested integration of Explorer v.AUV with the Iver2 AUV at a blind UXO trial for the Geneva International Centre for Humanitarian Demining, Switzerland, in San Diego Bay.

Figure 1: Magnetic maps –total field, before UXO seeding, and after UXO seeding; each “x” indicates unexploded ordnance detection.
Data courtesy of Geneva International Centre for Humanitarian Demining, Switzerland.

Survey Parameters

  • Two 250m x 120m surveys were conducted over the same area.
  • One before seeding with simulated UXO targets, and the second after seeding, on the following day.
  • The targets ranged in size from 60 mm to 160 mm. The smallest target was 1 kg.

Results

The total-field map (figure 1) shows significant geological background obscuring small near-surface targets and a small pipeline in the lower half of the block. The unseeded and seeded area’s gradient map clearly show 10 UXO targets. It was confirmed that all ten UXO were reliably detected after seeding.

Gradient Data From A Single Explorer Sensor

Overhauser sensors have high sensitivity, no dead zones or heading error, all of which make it orders of magnitude more accurate than any other magnetometer. These characteristics, complemented by Iver’s great control of position, depth and altitude, yielded exceptional quality data.

 

To discuss whether the Explorer v.AUV is the perfect fit for your application, please contact Gina Lopez:

gina.lopez@marinemagnetics.com

+1 (619) 655-0179

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UXO Trial
San Diego Bay

We tested integration of Explorer v.AUV with the Iver2 AUV at a blind UXO trial for the Geneva International Centre for Humanitarian Demining, Switzerland, in San Diego Bay.

Figure 1: Magnetic maps –total field, before UXO seeding, and after UXO seeding; each “x” indicates unexploded ordnance detection.
Data courtesy of Geneva International Centre for Humanitarian Demining, Switzerland.

Survey Parameters

  • Two 250m x 120m surveys were conducted over the same area.
  • One before seeding with simulated UXO targets, and the second after seeding, on the following day.
  • The targets ranged in size from 60 mm to 160 mm. The smallest target was 1 kg.

Results

The total-field map (figure 1) shows significant geological background obscuring small near-surface targets and a small pipeline in the lower half of the block. The unseeded and seeded area’s gradient map clearly show 10 UXO targets. It was confirmed that all ten UXO were reliably detected after seeding.

Gradient Data From A Single Explorer Sensor

Overhauser sensors have high sensitivity, no dead zones or heading error, all of which make it orders of magnitude more accurate than any other magnetometer. These characteristics, complemented by Iver’s great control of position, depth and altitude, yielded exceptional quality data.

 

To discuss whether the Explorer v.AUV is the perfect fit for your application, please contact Gina Lopez:

gina.lopez@marinemagnetics.com

+1 (619) 655-0179

The neutrally buoyant Explorer AUV Mag comes with:

  • Explorer AUV Towfish

    3 kg (6.6 lbs) in air

    0.004 kg (0.009 lbs) in water

  • BOB Software

  • Explorer AUV Cable

    53.5 g/m (0.036 lb/ft) in air

    15.5 g/m (0.010 lb/ft) in water

  • Buoyancy Trimming Clamp

    3 of Each Size Per Kit

  • Case

    Empty Case: 20.9 kg (46 lbs)

    Shipping Weight: 32.8 kg (72.3 lbs)

Explorer v.AUV Includes

  • Overhauser sensor
  • Electronics module with Larmour Counter
  • Leak detector
  • Depth rating 500m (728 psi)
  • Trim kit
Performance
Operating Zones Worldwide. Explorer collects accurate results regardless of how it’s pointed in relation to Earth’s magnetic field.
Absolute Accuracy 0.1 nT
Sensor Sensitivity 0.02 nT
Counter Sensitivity 0.001 nT
Resolution 0.001 nT
Dead Zone NONE
Temperature Drift NONE
Power Consumption 2 W
Range 18,000 nT to 120,000 nT
Gradient Tolerance Over 10,000 nT/m
Sampling Range 4 Hz – 0.1 Hz
Communications RS-232, 9600 bps
Power Supply 9-30 VDC or 100-240 VAC
Neutrally Buoyant Explorer Magnetometer
Length 86.5 cm (34 in)
Diameter 7.6 cm (3 in)
Weight in Air 3.7 kg (8.2 lbs)
Weight in Water <10 g (0.4 oz)
Neutrally Buoyant Tow Cable
Conductors Four + Shield + Floatation outer jacket
Breaking Strength 112 kg (250 lbs)
Outer Diameter 1.3 cm (0.51 in)
Weight in Air 139 g/m (9.3 lb/100 ft)
Min Bend Radius 140mm (5.5in)
Max Depth Rating 1000 m
Average Lengths 5 m - 10 m (depending on AUV size or application)