Airborne aircrafts are dependent on the Global Navigation Satellite System (GNSS). which is susceptible to interference due to the satellite base-station and cooperative communication. Synthetic aperture radar altimeter (SARAL) provides the ability to measure the topographic terrain for matching with Digital Elevation Model (DEM) to achieve positioning without relying on GNSS. However. https://thebrickes.shop/product-category/sofa-bed-sectional/