What Is A Remote Sensing Platform?

A remote sensing platform is a device that is used to collect data from a distance through radiation. There are many different types of remote sensing platforms, including satellites, aircraft, Lidar, Aerial Photogrammetry, and drones. Each type of platform has its own strengths and weaknesses, and each can be used for different purposes.

Satellites are perhaps the most well-known type of remote sensing platform. They orbit the Earth at high altitudes and can collect data about large areas very quickly. However, they can be expensive to operate, and their data can be of lower quality than data collected by other types of platforms.

Aircraft are another common type of remote sensing platform. They can fly at lower altitudes than satellites, which allows them to collect higher-quality data. Aircraft can also be more flexible than satellites, as they can be redirected to different areas on short notice. However, aircraft are more expensive to operate than satellites and can only cover limited areas.

Drones are a newer type of remote sensing platform that is becoming increasingly popular. Drones have many of the same advantages as aircraft, such as the ability to fly at low altitudes and collect high-quality data. Additionally, drones are much less expensive to operate than either satellites or aircraft.

Remote Sensing Process

Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance (typically from satellite or aircraft).

Types of Remote Sensing Platforms

types of remote sensing platforms

There are four main types of remote sensing platforms: aircraft, satellites, drones, and balloons.

Aircraft: Fixed-wing aircraft and helicopters are the most common type of platform for remote sensing. They are used for a variety of applications including mapping, surveying, environmental monitoring, and disaster response.

Satellites: Satellites are another popular type of remote sensing platform. They can be used for a variety of applications including weather forecasting, climate monitoring, mapping, and surveillance.

Drones: Drones are a newer type of platform that is becoming increasingly popular for remote sensing. They offer many advantages over traditional aircraft, including lower costs, greater flexibility, and easier access to hard-to-reach areas.

Balloons: Balloons are another newer type of platform that is being used more frequently for remote sensing. They offer many advantages over other platforms, including low cost, long flight times, and the ability to reach high altitudes.

Satellites: 

There are a variety of satellites that can be used for remote sensing, each with their own advantages and disadvantages. Platforms include optical, radar, hyperspectral, and more.

Optical satellites are the most common type of remote sensing platform. They use visible and near-infrared light to image the Earth. Optical satellites can provide high-resolution images, but they are limited by weather and daylight conditions.

Radar satellites use active microwave sensors to image the Earth. They can penetrate clouds and darkness, making them ideal for all-weather imaging. However, radar images have lower resolutions than optical images.

Hyperspectral satellites are equipped with sensors that measure specific wavelengths of light. This allows for the identification of materials and features on the ground that would be undetectable with other types of satellite. Hyperspectral images have lower resolutions than both optical and radar images.

Unmanned Aerial Vehicles:

Unmanned aerial vehicles (UAVs), also known as drones, are aircraft without a human pilot onboard. UAVs are increasingly being used for remote sensing and other applications.

UAVs come in a variety of shapes and sizes, from large military drones to small consumer quadcopters. Remote sensing platforms can be mounted on either fixed-wing or rotary-wing UAVs.

Fixed-wing UAVs are typically more efficient and have longer flight times than rotary-wing UAVs, but they are less agile and more difficult to launch and recover. Rotary-wing UAVs, on the other hand, are more maneuverable but have shorter flight times.

The choice of UAV platform depends on the specific application. For example, if long endurance is required, a fixed-wing platform would be more suitable. If agility is more important, a rotary-wing platform would be better suited.

There are many different types of remote sensing payloads that can be mounted on UAVs, including visible/infrared cameras, thermal cameras, multispectral cameras, lidar scanners, and radar systems. The specific payload depends on the application.

Airborne Lidar:

airbone Lidar

Lidar, which stands for Light Detection and Ranging, is a remote sensing technology that uses laser light to map the surface of the earth. Airborne lidar systems are used to collect data about the topography of the earth’s surface.

The data collected by airborne lidar can be used to create digital elevation models (DEMs), which are useful for a variety of applications, including environmental monitoring, disaster response, and infrastructure planning.

Airborne lidar systems consist of a laser scanner, a GPS receiver, and a computer. The laser scanner is mounted on an aircraft, and it emits pulses of laser light as the aircraft flies over the ground. The GPS receiver tracks the position of the aircraft, and the computer records the time at which each pulse of laser light hits the ground.

By knowing the position of the aircraft and the time at which each pulse hit the ground, it is possible to calculate the distance from the aircraft to each point on the ground. This information can then be used to create a three-dimensional map of the surface.

Sensors:

remote sensing sensor

There are many different types of sensors that are used in remote sensing platforms, each with its own strengths and weaknesses. In this section, we will take a look at the most common types of sensors used in remote sensing platforms, as well as their advantages and disadvantages.

The first type of sensor is the visible light sensor. This type of sensor is able to detect visible light, which makes it ideal for applications such as image analysis and identification. However, visible light sensors are limited in their ability to penetrate clouds or other obscuring objects, which can limit their usefulness in certain situations.

The second type of sensor is the infrared sensor. Infrared sensors are able to detect infrared radiation, which makes them ideal for applications such as detecting heat signatures. However, infrared sensors are also limited in their ability to penetrate clouds or other obscuring objects, which can limit their usefulness in certain situations.

The third type of sensor is the ultraviolet sensor. Ultraviolet sensors are able to detect ultraviolet radiation, which makes them ideal for applications such as identifying UV-emitting objects. However, ultraviolet sensors are also limited in their ability to penetrate clouds or other obscuring objects, which can limit their usefulness in certain situations.

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