منابع مشابه
The Detection of Lengthened Objects by Pulse Altimeter
The algorithm of lengthened objects detection is based on statistical processing of reflected pulse altimeter signal. The method of maximum posteriori probability is applied to make a decision. Minimum of maximum posteriori probability is accorded with lengthened objects position. This fact is taken into account to detect the objects’ position. This algorithm allows autonomic navigation to be i...
متن کاملSFOL Pulse: A High Accuracy DME Pulse for Alternative Aircraft Position and Navigation
In the Federal Aviation Administration's (FAA) performance based navigation strategy announced in 2016, the FAA stated that it would retain and expand the Distance Measuring Equipment (DME) infrastructure to ensure resilient aircraft navigation capability during the event of a Global Navigation Satellite System (GNSS) outage. However, the main drawback of the DME as a GNSS back up system is tha...
متن کاملMars Orbiter Laser Altimeter pulse width measurements and footprint-scale roughness
[1] The Mars Orbiter Laser Altimeter (MOLA) measured the pulse width and energy of altimetric laser returns during the course of two Mars years of operations. As secondary science objectives, MOLA obtains the footprint-scale roughness and the bidirectional reflectivity of Mars. MOLA underwent extensive preflight calibration and pulse measurements were monitored continuously in flight, but anoma...
متن کاملA Fiber-Optic-Based 1550-nm Laser Radar Altimeter with RF Pulse Compression
-We are developing a laser radar (lidar) altimeter that uses commercial off-the-shelf fiber-optic components and traditional RF and digital signal processing techniques to achieve fine-range accuracy despite a low transmit peak power. A 1550-nm operating wavelength was selected so that available erbium-doped fiber amplifiers (EDFAs) could be used to provide optical gain. The transmitted signal,...
متن کاملNext Generation Altimeter Service
The Radar Altimeter Database System RADS was launched by DEOS in 2001 as a precursor to an operational observing system as envisaged by the upcoming International Altimetry Service IAS. It is a facility to easily manage and access calibrated and validated altimeter data with consistency as common denominator. Whenever new data, models or knowledge arrive, the system is updated. We have now over...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOP Conference Series: Materials Science and Engineering
سال: 2019
ISSN: 1757-899X
DOI: 10.1088/1757-899x/537/2/022025