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Comparison Chart

Feature group

Feature

Sigma

Cableless systems with only shootblind capability

Cableless systems with some data return capability

Benefit of feature and related issues


Shootblind

Included

Only option

In some cases

Some operations need only shoot blind acquisition.

QC and status return to central system (cableless)

Included in basic system, via mesh radio nework

Not possible/not relevant

Possible

Risk of equipment and data loss when forced to shoot blind.

Real time data via directional/high gain antenna

Option

Not possible/not relevant

Not possible

Long range connectivity. Essential for some applications.

Real time data via omni directional antenna

Option

Not possible/not relevant

In some cases


Multiple real time recording modes useful for using cableless system in differing environments. A single mode would not be appropriate to cover all crew operations.

Real time data via digital telemetry cable option

Option

Not possible/not relevant

Not possible

Mixed mode recording

Possible

Not possible/not relevant

In some cases

Single data file output in mixed mode recording

Possible

Not possible/not relevant

In some cases

Useful for when used side by side existing cable system.

Acquisition geometry restricted by system deployment

No

No

In some cases

Limits operations that can be undertaken.

Serially dependent architecture

No

No

In some cases

Cableless system should be serially independent and not restrict acqn geometry.

 

International Seismic Co

9425 E Tower Rd.
Ponca City, OK 74604
Phone: (580) 762-8233
Fax: (580) 762-1785
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