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Experienced Surveyors: Have You Encountered Multispectral Sensing in the Field?

Posted: Wed May 06, 2026 4:20 pm
by jzeman
As drone technology continues to become more integrated into the land surveying profession, I’m curious how many surveyors here have come across or actively used multispectral sensing or other remote sensing technologies in the field beyond standard aerial mapping and photogrammetry.

As I continue studying toward my professional land surveying licensure while working in the industry, I’ve started looking deeper into emerging technologies that may shape the future of surveying workflows once I am fully licensed. Most discussions around UAVs in surveying tend to focus on orthomosaics, topographic mapping, LiDAR, volumetrics, and control workflows. However, multispectral imaging seems to be expanding into areas such as vegetation analysis, environmental monitoring, drainage identification, soil condition assessment, thermal anomaly detection, and even possible site contamination indicators.

While many of these applications are traditionally associated with environmental science, GIS, or agriculture, they appear to be crossing into areas that overlap with surveying, civil engineering, infrastructure management, and construction monitoring. With drone programs continuing to evolve in both public and private sectors, I’m interested in hearing how professionals in the field see these technologies fitting into the role of the modern surveyor.

For those working in public agencies, transportation, utilities, mining, or large-scale development projects:

* Have you encountered multispectral or remote sensing requirements on projects?
* Do you see practical value for surveyors, or is it still largely handled by environmental or GIS specialists?
* Are clients beginning to request these deliverables alongside traditional mapping products?
* How do you think this technology fits into the future role of the professional land surveyor?

I’d be interested in hearing real-world examples, lessons learned, limitations, or even where you think the profession is headed as these technologies continue developing.

Re: Experienced Surveyors: Have You Encountered Multispectral Sensing in the Field?

Posted: Thu May 07, 2026 8:00 am
by hellsangle
Joshua,
I'm impressed that you are doing the deep-dive on this subject.
Great questions too, (although I have no answers for you).

This 75 year old was curious on this subject and took a semester of Remote Sensing at Santa Rosa Junior College. Professor Neil King employed the book "REMOTE SENSING" by Sabins & Ellis for our semester . . . which is chuck full of remote sensing uses! (One hell of a class. One hell of an instructor.)

Good luck on your studies, Joshua!

Crazy Phil - Sonoma - Surveyor to Recorder

Re: Experienced Surveyors: Have You Encountered Multispectral Sensing in the Field?

Posted: Thu May 07, 2026 8:40 am
by LS_8750
We've done a couple/few things with multi-spectral:
- Infrared to pinpoint hot spots in a cold storage warehouse roof;
- Multi-spectral banding to determine cold spots (wet spots) on hillsides and/or growth vigor in vineyards and orchards.

The above was for litigation matters.

We've explored marketing these tools to vineyard owners, etc. We're too expensive. They seem to use satellite grade data which I suppose works for their purposes, perhaps supplemented once every so often with a drone flight. They don't get what it is that we can really provide.

Back to the litigation work.