State of Michigan (SOM)
2015
South Michigan - St. Joseph LiDAR - Michigan 2015
1.0
point digital data (LAS)
Michigan
State of Michigan
http://www.michigan.gov
This metadata record describes the Raw Point Cloud (RPC) for the 2015 Michigan LiDAR project covering approximately 552 square miles, in which its extents cover St. Joseph County. This data meets FEMA "Guidelines and Specifications for Flood Hazard Mapping Partners" and USGS Lidar Base Specification 1.2.
To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments, and hydrologic modeling. LAS and bare earth DEM data products are suitable for 1 foot contour generation.
Project Projection, Datums and Units. Projection - State Plane Michigan South. Horizontal datum - North American Datum of 1983 (NAD83 (2011)). Vertical datum - North American Vertical Datum of 1988 (NAVD88) using the latest geoid (Geoid12a) for converting ellipsoidal heights to orthometric heights. Units - intl feet
USGS Lidar Base Specification 1.2, FEMA "Guidelines and Specifications for Flood Hazard Mapping Partners".
Leica ALS70
4
0.65
1.67
2.2
0.71
2250
135
32
64
167
10
3
1064
1
0.3
1222
30
NAD_1983_2011_State_Plane_Michigan_South_2113_Ft_Intl
NGS Geoid12a
19.6
0.153
75
0.130
76
0.234
59
1.4
6
Withheld (ignore) points were identified in these files using class 10.
Swath "overage" points were identified in these files by classifying to class 11.
10
0
Created, never classified
en
20151120
20151204
ground condition
Unknown
-85.788365
-85.290414
42.066983
41.757473
770000
805000
4220000
4141400
MI
LiDAR
mapping
point cloud
Unclassified points
ALS70
Intensity return
LAS
Digital Surface Model (DSM)
First Return
MI
Michigan
St. Joseph County
United States
none
2015
This data may be used by the requested party for stated purposes and should not be re-distributed.
This data is for planning purposes only and should not be used for legal or cadastral purposes. Any conclusions drawn from analysis of this information are not the responsibility of Sanborn Map Company. Users should be aware that temporal changes may have occurred since this dataset was collected and some parts of this dataset may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Contact: State of Michigan
Everett Root
State of Michigan
Manager, Geodata Services Section
mailing address
111 S. Capitol Ave
Lansing
MI
48933
U.S.A.
10th Floor Romney
517-335-7180
roote@michigan.gov
8:00 AM - 5:00 PM
Microsoft Windows 7; ESRI ArcCatalog 9.3.1.1850
unknown
Unclassified
unknown
Raw Point Cloud
The Three County Area (Cass, St. Joseph, and Kalamazoo): The LiDAR surface was evaluated using a collection of 75 GPS surveyed checkpoints for the Nonvegetated Vertical Accuracy (NVA) report which compared favorably to the DEM.
LiDAR data is collected within the project area and processed. Before the Classified LAS were created, the dataset was verified against control. Control was collected for the 3 adjoining counties of Cass, Kalamazoo and St. Joseph Counties.
LiDAR data is collected for the project area. Post processing of the simultaneously acquired GPS/INS is performed and applied to the laser returns to output a point cloud in the specified project coordinate system and datums. The point cloud data is then subjected to automated classification routines to assign all points in the point cloud to ground, water, overlap and unclassified point classes. Anomalous laser returns that occur infrequently are removed entirely from the data set.
Horizontal positional accuracy for the Three County Area LiDAR is dependent upon the quality of the GPS/INS solution, sensor calibration and ground conditions at the time of data capture. The standard system results for horizontal accuracy meet or exceed the project specified 1.0 meter RMSE.
1.0
For the Three County Area, this value is computed by comparing ground control to a DEM derived from the classified LiDAR data and represents the RMSE of residuals on controls within the project area.
For the Raw Point Cloud, the NVA was tested with independent survey check points located in flat terrain types within the Three County Area. These check points were not used in the calibration or post processing of the lidar point cloud data. The survey check points were distributed throughout the block area. Specifications for this project require that the NVA be 10.0 cm (19.6 cm or better @ 95 percent confidence level).
0.078 m RMSE, or 0.153 m FVA @ 95 percent Confidence Interval
The NVA was tested using 75 independent survey check points located in flat terrain types within the Three County Area. The survey checkpoints were distributed throughout the block area. The 75 independent check points were surveyed using static GPS base stations collecting point location for 20 minute intervals. Elevations were measured for the x,y,z location of each check point. Elevations interpolated from the TIN surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.078 m. AccuracyZ has been tested to meet 10 cm Nonvegetated Vertical Accuracy at 95 Percent confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines.
Sanborn Map Company Inc.
Unpublished Material
LiDAR Data
1.0
Remote sensing image
None
None
disc
2015
ground condition
LIDAR and GPS_RAW
Aerial LiDAR and GPS/IMU data are recorded for the defined project area at an altitude, flight speed, scanner swath width and scanner pulse frequency to achieve the design goals of the project.
Sanborn Map Company Inc.
Unpublished material
Post processed GPS/INS
1.0
Tabular digital data
1200
disk
2015
Ground condition
GPS
Post processed GPS/INS is applied to the lidar point data to georeference each point in the project coordinate system
Sanborn Map Company Inc.
Unpublished material
Post processed lidar
1.0
Point digital data
1200
Disk
2015
ground condition
LAS
The post processed lidar data has been projected and oriented in the specified coordinate system as an un-classified point cloud.
New LiDAR data is captured for the project area using a Leica ALS870 Lidar system.
None
2015
LIDAR, GPS_RAW
The airborne GPS data is post-processed in Intertial Explorer software and LEICA CloudPro software to determine the LiDAR sensor's angle and orientation in the terrain (project) coordinate system and datums during the survey.
GPS_RAW
2015
GPS_SOL
The post processed GPS/INS solution is applied to the raw lidar data to orient and project the data points into the project area reference system as an unclassified point cloud.
LIDAR, GPS_SOL
2015
LAS
Point
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222101004
GCS_North_American_1983
NAD_1983_2011_State_Plane_MIchigan_South_FIPS_2113
0.01
0.01
coordinate pair
international feet
Lambert Conformal Conic
42.1
43.6666666666667
-84.3666666666667
41.5
13123359.5800525
0
coordinate pair
international feet
0.01
0.01
North American Vertical Datum of 1988(GEOID12a)
0.1
feet
Explicit elevation coordinate included with horizontal coordinates
Everett Root
State of Michigan
Manager, Geodata Services Section
mailing address
111 S. Capitol Ave
Lansing
MI
48933
U.S.A.
10th Floor Romney
517-335-7180
roote@michigan.gov
8:00 AM - 5:00 PM
Michigan 2015 LiDAR project
The State of Michigan Geographic Information Systems digital data have been tested and their documentation carefully reviewed. However, the State of Michigan and its representatives make no warranty or representation, either expressed or implied, with respect to the digital data and their documentation, their quality, performance, merchantability, or fitness for a particular purpose. The digital data are distributed on "as is" basis, and the user assumes all risk to their quality, the results obtained from their use, and the performance of the data. In no event will the State of Michigan or its representatives be liable for any direct, indirect, special, incidental or consequential damages resulting from and defect in the State of Michigan or in their documentation. This disclaimer of warranty is exclusive and in lieu of all others, oral or written, express or implied. No agent or employee is authorized to make any modification, extension, or addition to this warranty.
LAS
1.4
2000
2000
http://www.michigan.gov
unknown
5 - 1/2 inch hard drive
LAS
unknown
State of Michigan
unknown
2015
2015
Kris Andersen
Sanborn Map Co
Project Manager
mailing address
1935 Jamboree Dr
Colorado Springs
CO
80920
U.S.A.
719.264.5490
kandersen@sanborn.com
8:00 AM - 5:00 PM
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
20120330
08500700
TRUE
20160603
12485200
{8DE3DE1B-30AB-48D1-9B5B-D8574399589A}
Local Area Network
QL2 meeting USGS 1.2 specifications
Raw Point Cloud (LAS)
Classes: 0- Created; Never classified
20160603