[ EST. 1999 · Fayetteville, TN ]

Making Maps
Since 1999

G-Squared is a photogrammetric engineering firm specializing in high-precision aerial mapping. Since 1999, we have been producing design-scale map products that meet or exceed state and federal geospatial accuracy standards. At G-Squared, we prioritize quality over quantity. Our focused list of services is intentional, allowing us to excel in what we do best. Every product is made in America at our Fayetteville, TN facility, ensuring the highest level of precision, consistency, and reliability.

Section 01
Services

Our List of Services

G-Squared maintains a focused range of services so we can give each project the level of attention and technical detail it requires. Because every project is different, we provide multiple map scales, feature extraction levels, and file formats tailored to individual client needs and deliverable requirements. We utilize practical aerial camera and lidar sensor solutions to efficiently meet project specifications and client expectations.

01

Orthophotography

Georeferenced aerial imagery corrected for terrain, camera tilt, and geometric distortion to produce accurate mapping-grade deliverables at scales appropriate for your project. We provide engineering-grade accuracy compliant with current American Society for Photogrammetry and Remote Sensing (ASPRS) standards and specifications.

02

Planimetrics

2D and 3D map features collected to scale and formatted to the client’s specific GIS or CAD database requirements. Visible surface features identifiable from aerial imagery can be accurately extracted and represented within your mapping deliverables.

03

LiDAR

Airborne light detection and ranging (LiDAR) data acquired at points-per-square-meter densities and classification levels tailored to your project requirements.

04

Contours

Engineering-grade topographic mapping produced using both traditional 3D stereo compilation techniques and LiDAR-derived elevation data to create stable, accurate elevation products backed by our professional liability coverage.

05

Tax Mapping

Since 1999, tax mapping has been our primary area of expertise. We provide parcel-level GIS mapping solutions for counties, municipalities, and assessing officials.

06

Change Detection

Identification of changed features between current and previous mapping collections to help prioritize assessment and verification efforts.

Section 02
Our Clients

G-Squared provides mapping services for a wide range of clients nationwide.

Our Clients

  • Engineering Firms
  • City, County & State Government
  • Municipalities
  • Utilities
  • Airports
  • Departments of Transportation
  • Emergency Management Agencies
  • United States Geological Survey
  • Tennessee Valley Authority
Section 03
Our Team

Our Team

As a small professional organiation, we believe projects requiring this level of technical detail should be managed by people who are accessible and directly involved in the work. When you contact G-Squared, you will speak with a team member actively working on your project.

Lindsey Galyen

Lindsey Galyen

Principal
Certified Photogrammetrist
Michael Whisenant

Michael Whisenant

General Manager · GIS
Frank Taylor

Frank Taylor

Production Manager
Certified Photogrammetrist
Zachary Galyen

Zach Galyen

Project Manager
Certified Photogrammetrist
Principal · Founder

Lindsey Galyen

Certified Photogrammetrist · 30+ years experience

Lindsey Galyen founded G-Squared in 1999. He is an ASPRS Certified Photogrammetrist and a Licensed Land Surveyor Photogrammetrist in Virginia, with over 30 years of experience in the field.

Over the course of his career, Mr. Galyen has held both technical and managerial roles covering nearly every aspect of the profession, primarily serving as Chief Photogrammetrist, Project Manager, or principal technical point of contact on a wide variety of domestic and international projects. His experience includes the successful application of photogrammetric and geospatial technologies across numerous mapping and geotechnical disciplines.

Throughout his career, Mr. Galyen coordinated photogrammetric services among multiple stakeholders to develop integrated project requirements for agencies and organizations including FEMA and the USGS. His experience and industry knowledge continue to serve as a valuable resource to G-Squared and its clients.

Education
University of Arkansas
B.S., Geography
Certifications
ASPRS Certified Photogrammetrist #R971
Registered Land Surveyor #78433RPP
Offices Held
Chairman, Photogrammetry SIG of ZI Imaging Users
Board Member, Tennessee Geographic Information Council
Memberships
American Society of Photogrammetry and Remote Sensing (ASPRS)
Management Association for Private Photogrammetrist Surveyors (MAPPS)
General Manager

Michael Whisenant

17 years at G-Squared · Operations & GIS

Michael Whisenant has 17 years of photogrammetry and geospatial experience with G-Squared, along with an additional 10 years of management experience in a production environment. He earned a Bachelor of Science degree in Graphic Design from Samford University and holds Level I, Level II, and Gold Certification for Utility Board of Directors through the National Rural Electric Cooperative Association. He is a member of ASPRS and TNGIC.

As General Manager, Mr. Whisenant oversees the day-to-day operations of G-Squared, including project scheduling, production coordination, staffing, and client deliverables. He administers contracts involving aerial photography, aerial and ground GPS survey, digital orthophotography, topographic mapping, and image processing services.

His responsibilities include managing project schedules and milestones, monitoring production progress, performing schedule variance analysis, and implementing process improvements to enhance operational efficiency and overall company performance.

Mr. Whisenant also oversees GIS operations at G-Squared, including the creation and maintenance of geodatabases utilizing ESRI and Hexagon Geomedia platforms.

Education
Samford University
B.S., Graphic Design
Certifications
Level I, II, and Gold Certification for Utility Board of Directors — National Rural Electric Cooperative Association
Memberships
American Society of Photogrammetry and Remote Sensing (ASPRS)
Tennessee Geographic Information Council (TNGIC)
Focus
Operations · Scheduling · GIS / Geodatabase architecture
Production Manager · Chief Photogrammetrist

Frank Taylor

ASPRS Certified · 35+ years experience

Frank Taylor is an ASPRS Certified Photogrammetrist and a licensed Professional Photogrammetric Surveyor in South Carolina and Virginia. He earned a Bachelor of Science degree in Geology from Tennessee Technological University and has more than 35 years of experience in the geospatial industry.

Mr. Taylor began his career as a Cartographer with the National Geospatial-Intelligence Agency (formerly the Defense Mapping Agency) before transitioning into private industry in 1989. Throughout his career, he has served in technical and managerial roles involving photogrammetric mapping, aerial triangulation, airborne and mobile LiDAR, GIS, project management, and production oversight for transportation, energy, mining, and government clients.

As Chief Photogrammetrist, Mr. Taylor provides technical oversight for G-Squared’s mapping and geospatial operations, including aerial triangulation workflows, QA/QC procedures, flight planning, and production standards. His project experience includes work supporting the United States Army Corps of Engineers, USDA, TVA, multiple state Departments of Transportation, and numerous local governments..

Education
Tennessee Technological University
B.S., Geology
Certifications
ASPRS Certified Photogrammetrist #R1208CP
South Carolina Photogrammetric Surveyor #24083
Virginia Surveyor Photogrammetrist #0408000177
Memberships & Service
American Society of Photogrammetry and Remote Sensing (ASPRS) · Former Director, Professional Practice Division
Tennessee Geographic Information Council (TNGIC)
National Council of Examiners for Engineering and Surveying (NCEES) — two committees
Notable Clients
USACE, National Park Service, USDA, DHS, TVA, multiple state DOTs, numerous local governments
Direct contact ftaylor@gsqmap.com →
Project Manager

Zach Galyen

Certified Photogrammetrist · With G-Squared since 2010

Zach Galyen, CP has experience in photogrammetry, aerial photo interpretation, stereo compilation, GIS coordination, and project management. He earned a Bachelor of Science degree in Geography in 2016 and has worked with G-Squared since 2010 through both internship and full-time professional roles.

During his early technical experience with G-Squared, Mr. Galyen worked extensively with stereo imagery compilation, aerial photographic interpretation, digital terrain model collection, and quality control utilizing Intergraph photogrammetric software platforms. He contributed to numerous countywide orthophotography, planimetric mapping, and topographic mapping projects throughout Alabama.

As a Project Manager, Mr. Galyen is responsible for client coordination, project development, production planning, task order preparation, and implementation of project requirements between clients and production staff. His responsibilities also include coordination of GIS deliverables, mapping specifications, quality control processes, and business development activities.

Education
University of North Alabama
B.S., Geography (2016)
Certifications
ASPRS Certified Photogrammetrist #1686
Memberships
American Society of Photogrammetry and Remote Sensing (ASPRS)
Tennessee Geographic Information Council (TNGIC)
Managament Association for Private Photogrammetrist Surveyors(MAPPS)
Focus
Client coordination · Production planning · QC · GIS deliverables · Business development
Direct contact zgalyen@gsqmap.com →
Section 04
Get in touch

Contact Us

G-Squared production facility in Fayetteville, Tennessee
[ Fayetteville, TN · Production facility ]

We take pride in building lasting relationships through reliable service, communication, and quality deliverables. Whether you are planning a new project or simply exploring options, we would be glad to discuss how G-Squared may be able to support your goals.

Fayetteville, TN Office
20 Ardmore Highway, Fayetteville, TN 37334
Phone: (931) 438-1414

Email the team →