Give an account of along-track and across-track scanners. 

Along-track and across-track scanners are two types of remote sensing instruments that are used to collect data on the Earth's surface and atmosphere. These scanners operate by scanning a narrow swath of the Earth's surface as the sensor platform moves along its flight path. The data collected by the scanners can be used to generate images and maps of various physical and chemical properties, such as temperature, vegetation cover, and atmospheric composition.

Along-track scanners are sensors that are oriented along the direction of the sensor platform's motion. These scanners operate by continuously scanning the Earth's surface as the sensor platform moves forward. The data collected by the scanner is recorded as a series of pixels along a line, with each pixel representing a small area of the Earth's surface. Along-track scanners are commonly used in applications where a high spatial resolution is required, such as in the monitoring of urban areas, forests, and agricultural lands.

One example of an along-track scanner is the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument, which is carried on board NASA's Terra and Aqua _________ _____ _____ _____ ____ __________ ___.
________ ______ _________ ____ ___ ____.
______ ____ ________ __________ ___ ______ _____ _______ ________ __________.
__________ _______ ___ _______ _____ _______.
______ ____ __________ _______ ____ _______ _________ ______.
____ _____ ____ _____ _____ ________ _______.
__________ _____ _____ ______ _______ _______ _____.
________ __________ ___ _________ _________ ________ ______ ______ ______ _________.
____ ___ ____ _____ ________.
___ ______ _______ ______ _______ _____ __________ ___ _______ __________ _______.
__________ __________ ______ __________ _____ _______.
__________ ________ _____ ______ ________ ___.
________ __________ _________ ___ ____ _______ _____ ___.
___ _________ ______ _____ _________ _____ _________ ___.
___ _____ _________ ___ ________ ________ _________ _____ ______ _____ ________.
_____ ____ __________ ___ _____ ___ _______ ____ ________ ___ ____ _______.
_______ _______ __________ __________ _____ _______.
_________ _____ _____ ______ _______ ________ ___ _____.
___ __________ _______ _________ ____ ____ ____ ____.
__________ _______ _________ __________ ________ _____ ______ _________ _____.
__________ ______ __________ ______ _________.
_______ ______ ____ ________ __________ _______ ______.
______ ___ __________ _____ _________.
________ __________ _________ ____ ___ _______ ______.
________ _________ ____ ______ _______ _____.
___ ________ ____ _________ ________ ______ ________.
_________ __________ _________ ______ ___ ______ _______ _________ _________ _____.
________ _______ _____ ___ _____ ___ _____ __________ _________ ____ _________.
________ _____ ___ _______ __________ _________ _______.
________ __________ ________ __________ _______ ____ ________ ___ ____.
______ ________ ______ ________ __________ ________ __________ _________ _______ ________ ____.
___ _______ _____ ___ ____ _________ ______ ______ _____.
______ ____ ___ ________ ____ ______ _______.
_____ __________ ___ ___ ______ ___.
_______ ________ ________ _______ _______ ____ _________ _______ _____ ________ _______ ___.
________ _________ _____ _______ _____ __________.
_______ _______ _________ ___ ______ _______ ______ ________ __________ ______ _____ ________.
__________ _____ ______ ______ _____.
_______ _________ ________ __________ ______ _______ __________ _______ ______ ______ _______.
_______ ________ ________ __________ _______ ___ __________ ___ _____ _______.
________ _____ _______ ________ ____ _______ _________ __________.
_______ ______ ____ _________ ____ _________ __________ _________ ________ ______.
__________ _______ ____ __________ ______.
_____ _________ _______ __________ _____ ____ _________ ____ ____ ___ ______ _________.
_________ __________ _______ _____ ________ ____ ____ _____ ______.
_________ _________ ______ _____ _____ __________ _________ ___.
__________ ___ ____ ________ _______ _____ ________ _____ _____ ___ _____.
__________ _____ ___ ___ __________ _______ _____ ___ ____ __________ _____.
____ ________ ________ _______ ____.
_______ _____ __________ ________ ____ ___ __________.
__________ _________ __________ ________ ___ ___ ___.
________ _________ _____ ___ ___.
__________ _______ ______ __________ ______ _________.
____ _________ ____ _________ __________ __________ ____ ______ ________ _____.
_______ ___ _____ ______ ____ ___ ___ _______ _______.
____ _______ ____ _____ ________ _______ _________ ________ __________ ___.
________ ______ _______ ______ ________.
_____ ______ ________ _________ ________ ________ _______ ______ __________.
_______ _________ __________ __________ ____.
____ _____ _________ _________ ____ ______ _________ _________.
_______ _________ ___ ________ ___.
___ __________ ___ _________ _____ __________ ____.
__________ _____ _______ _______ _______ __________ ________ ___ __________ _____ ________ ______.
_______ _______ _______ ____ ______ _________ ________ _______ _________ ______ _________.
________ ______ ______ _________ _________ _________ __________ ________ _____.
____ _____ ____ ______ _________ ______ ___ __________ __________.
Get Full Answer on WhatsApp