Accuracy You Can Trust
Accuracy You Can Trust
Airborne Surveying
Lidar
Airborne Laser Scanning (ALS), which is commonly referred to as Lidar, is an established technology for collecting large areas of elevation data in a short amount of time. Surtech’s state-of-the-art technology allows the collection of millions of points over a survey area without the need for extensive ground access.
The aircraft-mounted system collects up to 5,000 Hectares per day independent of the type of terrain or vegetation. The collected data is post processed using the TerraSolid processing suite to produce Digital Terrain Models (DTM), Digital Surface Models (DSM), and contours. Our survey equipment also consists of a high-resolution medium-format camera to provide geo-referenced digital orthophotos.
Survey Aircraft
Surtech owns a dedicated turbine-converted Cessna 206H which is specifically configured for survey operations. It is equipped with a standard 20-inch camera hole and modified with an extended exhaust to clear the survey equipment. It is operated under a long-term support agreement with a local aviation company which hold a BARS accredited safety rating. Our aircraft has a comfortable cruising speed of 100 knots, allowing for maximum point density collection and responsive terrain following.
Airborne Surveying
Lidar
Airborne Laser Scanning (ALS), which is commonly referred to as Lidar, is an established technology for collecting large areas of elevation data in a short amount of time. Surtech’s state-of-the-art technology allows the collection of millions of points over a survey area without the need for extensive ground access.
The aircraft-mounted system collects up to 5,000 Hectares per day independent of the type of terrain or vegetation. The collected data is post processed using the TerraSolid processing suite to produce Digital Terrain Models (DTM), Digital Surface Models (DSM), and contours. Our survey equipment also consists of a high-resolution medium-format camera to provide geo-referenced digital orthophotos.
Survey Aircraft
Surtech owns a dedicated turbine-converted Cessna 206H which is specifically configured for survey operations. It is equipped with a standard 20-inch camera hole and modified with an extended exhaust to clear the survey equipment. It is operated under a long-term support agreement with a local aviation company which hold a BARS accredited safety rating. Our aircraft has a comfortable cruising speed of 100 knots, allowing for maximum point density collection and responsive terrain following.
Airborne Surveying
Lidar
Airborne Laser Scanning (ALS), which is commonly referred to as Lidar, is an established technology for collecting large areas of elevation data in a short amount of time. Surtech’s state-of-the-art technology allows the collection of millions of points over a survey area without the need for extensive ground access.
The aircraft-mounted system collects up to 5,000 Hectares per day independent of the type of terrain or vegetation. The collected data is post processed using the TerraSolid processing suite to produce Digital Terrain Models (DTM), Digital Surface Models (DSM), and contours. Our survey equipment also consists of a high-resolution medium-format camera to provide geo-referenced digital orthophotos.
Survey Aircraft
Surtech owns a dedicated turbine-converted Cessna 206H which is specifically configured for survey operations. It is equipped with a standard 20-inch camera hole and modified with an extended exhaust to clear the survey equipment. It is operated under a long-term support agreement with a local aviation company which hold a BARS accredited safety rating. Our aircraft has a comfortable cruising speed of 100 knots, allowing for maximum point density collection and responsive terrain following.
Lidar Technology
Lidar data is achieved by measuring the time delay between the transmission of a laser pulse and the return reflection signal from the object scanned. This distance (or range) is calculated using the physics relationship between the time it takes a single pulse to return to the sensor and the constant speed of light.
The position of the aircraft is referenced by using an integrated GPS-IMU technology. The equipment will detect multiple returns from each emitted pulse allowing it to record the top of vegetation canopy as well as the ground surface below the vegetation.
During post processing Surtech can remove all laser strikes returned from vegetation and retain points from the true ground surface. This true ground data is then used to produce Digital Terrain Models (DTM). Combined with the Lidar equipment is a medium-format digital camera. This allows Surtech to utilize the Lidar derived DTM to automatically create ortho-rectified imagery of the survey site.
Lidar Technology
Lidar data is achieved by measuring the time delay between the transmission of a laser pulse and the return reflection signal from the object scanned. This distance (or range) is calculated using the physics relationship between the time it takes a single pulse to return to the sensor and the constant speed of light.
The position of the aircraft is referenced by using an integrated GPS-IMU technology. The equipment will detect multiple returns from each emitted pulse allowing it to record the top of vegetation canopy as well as the ground surface below the vegetation.
During post processing Surtech can remove all laser strikes returned from vegetation and retain points from the true ground surface. This true ground data is then used to produce Digital Terrain Models (DTM). Combined with the Lidar equipment is a medium-format digital camera. This allows Surtech to utilize the Lidar derived DTM to automatically create ortho-rectified imagery of the survey site.
Survey
Equipment
Currently we own and operate an Optech Orion m300 Lidar system capable of collecting up to 300,000 points per second. This sensor is equipped with a military-grade IMU for positional corrections and a very sensitive Time Interval Meter (TIM) for accurate lidar range computation.
Surtech also operates a high-resolution (100 megapixel) medium-format RGB aerial camera manufactured by Phase One. The positional information from the lidar sensor is directly applied during post-processing to ensure the derived ortho-imagery matches the Lidar data seamlessly.
We also recently added a gyro-stabilized mount for the lidar and camera units. Manufactured by SOMAG, this GSM4000 reads the IMU corrections in roll, heading and pitch and will adjust for these in real-time during acquisition, making the final data processing of data cleaner and more streamlined.
Survey
Equipment
Currently we own and operate an Optech Orion m300 Lidar system capable of collecting up to 300,000 points per second. This sensor is equipped with a military-grade IMU for positional corrections and a very sensitive Time Interval Meter (TIM) for accurate lidar range computation.
Surtech also operates a high-resolution (100 megapixel) medium-format RGB aerial camera manufactured by Phase One. The positional information from the lidar sensor is directly applied during post-processing to ensure the derived ortho-imagery matches the Lidar data seamlessly.
We also recently added a gyro-stabilized mount for the lidar and camera units. Manufactured by SOMAG, this GSM4000 reads the IMU corrections in roll, heading and pitch and will adjust for these in real-time during acquisition, making the final data processing of data cleaner and more streamlined.
Survey
Equipment
Currently we own and operate an Optech Orion m300 Lidar system capable of collecting up to 300,000 points per second. This sensor is equipped with a military-grade IMU for positional corrections and a very sensitive Time Interval Meter (TIM) for accurate lidar range computation.
Surtech also operates a high-resolution (100 megapixel) medium-format RGB aerial camera manufactured by Phase One. The positional information from the lidar sensor is directly applied during post-processing to ensure the derived ortho-imagery matches the Lidar data seamlessly.
We also recently added a gyro-stabilized mount for the lidar and camera units. Manufactured by SOMAG, this GSM4000 reads the IMU corrections in roll, heading and pitch and will adjust for these in real-time during acquisition, making the final data processing of data cleaner and more streamlined.
Surtech offers a comprehensive range of specialised terrestrial and airborne surveying services utilizing professional personnel and leading edge technology.
GET IN TOUCH
Surtech offers a comprehensive range of specialised terrestrial and airborne surveying services utilizing professional personnel
and leading edge technology.
GET IN TOUCH
Surtech offers a comprehensive range of specialised terrestrial and airborne surveying services utilizing professional personnel
and leading edge technology.