What are the differences between the remote sensing images of landsat spot and Kuaibird?

landsat is the most balanced. The image fusion technology used by landsat. Remote sensing image fusion is to process the images of the same target collected by multiple source channels through certain image processing, extract the information of each channel, and finally synthesize into a unified image or comprehensive image features for further processing, which is conducive to enhancing multiple data analysis and dynamic monitoring capabilities of the environment, improving the timeliness and reliability of remote sensing information extraction, effectively increasing the utilization rate of data, and can be used for large-scale applications. It provides a good foundation for large-scale remote sensing application research, and is also a frontier topic and hot spot in current remote sensing application analysis research.

sport has more functions. The HRV mounted on the Spot1, 2, and 3 satellites is an array pushbroom scanner. Its simple structure is shown in Figure 4-5. There is a plane reflector in the instrument, which reflects the electromagnetic waves radiated from the ground to the reflector group, and then focuses it on the CCD array element. The output end of the CCD outputs a time-series video signal. Since the line array CCD element is used as the detector, an influence line of the vertical route can be obtained at the same time in an instant. There is no need to use a swinging scanning mirror to acquire continuous image strips along the track in a push-broom manner like a slot camera.

Quickbird uses the Global Aeronautical Imaging System 2000 (BGIS2000) satellite system, which has the fourth highest earth imaging resolution in the world. So it has the most advanced and highest resolution.

TM is the sensor of the early Landsat thematic mapper, which is multi-band.

SPOT satellite is an Earth observation satellite system. “SPOT” is the French abbreviation of Systeme Probatoire d’Observation de la Terre, which means Earth Observation System.

(Landsat) (called Earth Resources Technology Satellite - ERTS before 1975), since July 23, 1972, 8 satellites have been launched (the sixth one failed). At present, Landsat 1-4 have all failed one after another, and Landsat 5 is still operating beyond its scheduled date (from its launch on March 1, 1984 to the present). Landsat 7 was launched on April 15, 1999. Landsat8 was launched on February 11, 2013, and began acquiring images after 100 days of test operation.

QuickBird satellite was launched by DigitalGlobe from Vandenberg Air Force Base in the United States on October 18, 2001. It is the first commercial satellite in the world to provide sub-meter resolution. The satellite image resolution is 0.61m.