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The low-rate picture transmission (LRPT) is a digital transmission system, intended to deliver images and data from an orbital weather satellite directly to end users via a VHF radio signal. It is used aboard polar-orbiting, near-Earth weather satellite programs such as MetOp and NPOESS .
The Taifa-1 satellite also capitalized as TAIFA-1 satellite, is a Kenyan earth observation 3U CubeSat, and was launched on 14 April 2023 into space together in a joint collaboration with Exolaunch aboard a SpaceX's Falcon 9 rocket from Vandenberg Space Force Base in California, USA. [1]
Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221.; The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies.
The first weather satellite to be considered a success was TIROS-1, launched by NASA on April 1, 1960. [5] TIROS operated for 78 days and proved to be much more successful than Vanguard 2. Other early weather satellite programs include the 1962 Defense Satellite Applications Program (DSAP) [ 6 ] and the 1964 Soviet Meteor series .
The propulsion system was then passivated and the satellite deactivated. Meteosat-9 is also stationed over the Indian Ocean, arriving at 45.5°E on 20 April 2022 and it took over as prime IODC spacecraft on 1 June 2022 (replacing Meteosat-8). Meteosat-10 and -11 are located over Africa with various differences in operational configuration.
The Automatic Picture Transmission (APT) system is an analog image transmission system developed for use on weather satellites.It was introduced in the 1960s and over four decades has provided image data to relatively low-cost user stations at locations in most countries of the world.
Cyclone Idai was the costliest disaster in Africa, at $1.9 billion, in the period from 1970 to 2019, according to a WMO report on weather extremes and their economic and personal tolls.
The working frequency band for HRPT is L Band at 1.670–1.710 GHz and the modulation type isBPSK. [2] On NOAA KLM satellites the transmission power is 6.35 Watts, or 38.03 dBm. [ 3 ] The METOP-A satellite broadcasts with a bandwidth of 4.5 MHz, these use QPSK and AHRPT.