NGP Standards and Specifications

Lidar Base Specification Revision Status

The 3DEP Lidar Base Specification undergoes a continuous revision and update process. Revision requests are submitted through the 3DEP Working Group (WG) and the National Geospatial Technical Operations Center. Requests are reviewed by the Elevation Specifications Review Board (ESRB). If the ESRB approves a request, it is reviewed for final approval by the 3DEP WG. 

Revision Status for the Lidar Base Specification as of June 12, 2020

Short name of revision Status Last updated
Update LAS reference to R15 Approved by ESRB Nov. 26, 2019
Clarify unrestricted rights clause Approved by ESRB Apr. 28, 2020
Require photographs of checkpoints Approved by ESRB Apr. 28, 2020
Clarify class 0 and withheld flagging Approved by ESRB Jan. 28, 2020
Revise swath polygon requirements Approved by ESRB Mar. 19, 2020
Revise use of withheld flag Approved by ESRB Apr. 28, 2020
Vertical accuracy assessment using ground points Under review by ESRB June 4, 2020
Swath Separation Images Approved by ESRB  June 12, 2020

Explanation about the status:

  • Under review by ESRB:
    • The revision has been through a preliminary review by the ESRB’s Technical Committee and is being reviewed by the board. Significant changes to the text of the revision should be expected throughout this stage.
  • Approved by ESRB:
    • The revision has been reviewed and approved by the ESRB and is awaiting approval by the 3DEP Working Group. Changes to the text are still likely.
  • Provisional:
    • Revision has been through the entire approval process and is approved for use.
    • Revision will be incorporated in the next release of the Lidar Base Specification.
    • The specification should be followed for current and future work, if at all possible.


Elevation Specifications Review Board