IT Forensics · Drones

Forensic analysis of barometer data – the forensic use of air-pressure-based altitude measurement

In addition to satellite-based positioning, many drones use a barometric altitude sensor, which determines the relative flight altitude based on the surrounding air pressure and often provides more accurate readings than an altitude measurement based solely on GPS.

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This data can serve as a valuable reference, independent of GPS altitude measurements, particularly when determining the actual flight altitude at a specific point in time.

Why LanCologne?

Since its foundation, LanCologne has specialised in professional IT forensics. Our staff have decades of experience in the field of information technology and assist companies, solicitors, private individuals and, on a regular basis, the courts in the technical investigation of complex digital matters.

The examination is, as a matter of principle, carried out exclusively on a forensic copy, a forensic image or a data source captured in a technically equivalent manner that preserves the integrity of the evidence. The original evidence remains unchanged and is stored in a manner that preserves its integrity.

Our services

We analyse available barometer data and use it to verify and supplement the GPS-based altitude reconstruction of a flight.

Typical areas of application

Verification of the actual flight altitude at a specific point in time
Evidence of unauthorised high altitudes
Validation of GPS elevation data
Supplementary information on crash investigations
Judicial and non-judicial expert reports
Assessment of drone incidents under insurance law

This is how a barometer data analysis is carried out

Once the data has been backed up, available barometric readings are extracted and compared with the altitude reconstructed from GPS data. Any discrepancies between the two data sources are documented and, where possible, explained.

Why is the analysis of barometer data relevant in a forensic context?

As barometric altitude measurements can, under certain conditions, be more accurate than GPS-only altitude measurements, they help to provide a more reliable overall indication of the actual flight altitude.

Significant discrepancies between the two measurement methods are investigated in detail in order to rule out any possible measurement errors or tampering.

Frequently Asked Questions

Is barometric altimetry always more accurate than GPS?+
Not necessarily; both methods have their own specific sources of error, which is why it makes sense to compare the two values.
Can weather conditions affect barometric readings?+
Yes, fluctuations in air pressure caused by changes in the weather can affect relative altitude measurements and are taken into account in the assessment.
Is barometric altitude measured in absolute or relative terms?+
Usually relative to the starting point, which is taken into account accordingly when interpreting the values.

LanCologne – IT Forensics Drones Cologne

Do you require a professional forensic investigation into the „forensic analysis of barometer data"? LanCologne can assist you in securing digital evidence in a manner that stands up in court, as well as in the transparent analysis of relevant drone artefacts.

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