The power received by a GPS receiver located on an airplane flying over the ocean and collecting the GPS signal reflected off the surface is estimated for varying wind speed and wind direction, platform altitude, satellite elevation angle, and receiver integration time.

GPS Remote Sensing Scatterometry Doppler Filtering↗

NASA NTRS2000

Altimetry with Reflected GPS Signals: Results from a Lakeside Experiment

UNKNOWN

GPS↗

NASA NTRS2000

Theoretical Description of a Bistatic System for Ocean Altimetry Using the GPS Signal

The paper presents the fundamental characteristics of bistatic altimetry performed using the Global Positioning System (GPS) signal scattered off the ocean surface and collected by a receiver in space.

Ocean Topography GPS Bistatic Geometry Coherence T↗

NASA NTRS1999

A Novel Approach to Atmospheric Profiling with a Down-Looking Mountain-Based or Air-Borne GPS Receiver

Explore the source record for details and available documents.

Occultation Atmospheric Science GPS↗

NASA NTRS1999

A Novel Approach to Ocean Altimetry Ulitizing the GPS Signa

Explore the source record for details and available documents.

Altimetry GPS Wave Height Mean Sea Surface↗

NASA NTRS1999

A Novel Approach to Ocean Altimetry Utilizing the GPS Signal

Explore the source record for details and available documents.

Sea Surface topography GPS Reflections eddy monito↗

NASA NTRS1999

A Novel Approach to Atmospheric Profiling with a Mountain-Based or Air-Borne GPS Receiver

Explore the source record for details and available documents.

Occultation Water Vapor Profiling Atmospheric refr↗

NASA NTRS1998

GPS Ocean Surface Reflection Technology Requirements for Space Applications

Two key NASA OES research objectives are the Seasonal to Interannual Climate Variability and Prediction and Long-Term Climate/Natural Variability and Change investigations.

GPS↗

NASA NTRS1998

A Novel Approach to Atmospheric Profiling with a Down-looking Mountain-based or Air-borne GPS Receiver

We present a generalized raytracing inversion scheme which can be used when occultation data is acquired with a receiver within (e.g., on mountain top) or outside (i.e., in space) the atmosphere.

resolution profiles occultation↗

NASA NTRS1997

Designing Dielectric Grating Filters with PGAPACK

The chapter is concerned with the design of planar dielectric layer diffraction gratings, which exhibit sharp resonances due to the coupling of exterior evanescent diffractive fields to the leaky modes of dielectric waveguides.

genetic algorithms↗

NASA NTRS1997

Synthesis of Novel All-Dielectric Grating Filters Using Genetic Algorithms

We are concerned with the design of inhomogeneous, all dielectric (lossless) periodic structures which act as filters.

dielectric↗

NASA NTRS1997

Synthesis of Novel All-Dielectric Grating Filters using Genetic Algorithms

The feasibility of novel all-dielectric waveguide grating filters is demonstrated, using a genetic algorithm to solve for material dielectric constants and geometric boundaries separating homogeneous regions of the periodic cell.

all-dielectric↗

NASA NTRS1996

Particle Scattering in the Resonance Regime: Models Based on Integral Equations and Hybrid Finite Elements - Integral Equation Techniques

Reliable descriptions of the optical properties of clouds and aerosols are essential for studies of radiative transfer in the terrestrial atmosphere...Here we explore the utility of two approaches for deriving the single scattering optical properties of particles with sharp corners and large axial ratios.

clouds aerosols axi-symmetric particles resonance ↗