What is remote sensing? It is the collection of data without the need of physical contact. Instead, sensors are mounted on aircraft or satellites and these devices detect the varying energy that the Earth reflects. The signals measured are classified as propagated and include electromagnetic waves. This technology distinguishes objects in the atmosphere, oceans and surface. Remote sensors can be either active or passive depending on the details of data collection. Multiple systems are used such as RADAR and LiDAR. Both are classified as active data collection procedures. Remote sensors allow for the observation of inaccessible and dangerous areas. Arctic and Antarctic regions can still be studied despite extreme environment and militaries also use the technology for research.
Passive remote sensing gathers natural radiation such as reflected sunlight. Sensors will also respond to other external stimuli. They take note of radiation during daylight hours, because they depend on the sun to function. Conversely, active sensors rely on internal stimuli. For instance, the sensor may project a laser beam to the Earth’s surface. The device will then wait for the reflection to travel back. It records the time it takes for this to occur. Usually, the timing is imperceptible to those monitoring the equipment, but the technology can pick up on milliseconds and other minute measures of time. Unlike their counterpart, active methods can be used at any point in the day with proper monitoring.
One of the chief applications of remote sensing is accurate mapping of land or ocean areas. As a result, scientists and other professionals can monitor the shoreline or sediment transport over time. Oceans and hazardous weather tracking also benefit from remote sensors and associated software. Accuracy can wane as the device measures further from the established center. To help with this the attached computer will make note of 30 or so image points. This will be the baseline to aid with more precise data collection. Otherwise, the pictures and maps created may turn out distorted or unusable. For more information on remote sensing services, please visit www.earthgraphicsinc.com.
Passive remote sensing gathers natural radiation such as reflected sunlight. Sensors will also respond to other external stimuli. They take note of radiation during daylight hours, because they depend on the sun to function. Conversely, active sensors rely on internal stimuli. For instance, the sensor may project a laser beam to the Earth’s surface. The device will then wait for the reflection to travel back. It records the time it takes for this to occur. Usually, the timing is imperceptible to those monitoring the equipment, but the technology can pick up on milliseconds and other minute measures of time. Unlike their counterpart, active methods can be used at any point in the day with proper monitoring.
One of the chief applications of remote sensing is accurate mapping of land or ocean areas. As a result, scientists and other professionals can monitor the shoreline or sediment transport over time. Oceans and hazardous weather tracking also benefit from remote sensors and associated software. Accuracy can wane as the device measures further from the established center. To help with this the attached computer will make note of 30 or so image points. This will be the baseline to aid with more precise data collection. Otherwise, the pictures and maps created may turn out distorted or unusable. For more information on remote sensing services, please visit www.earthgraphicsinc.com.