Global comparisons of satellite derived SSTs with in-situ observations from the World Ocean database
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SST climate↗
Engineering topics
Armstrong, J.
Publications and source records attributed to Armstrong, J..
First deep space operational experience with simultaneous X- and Ka-bands coherent tracking
This paper describes the new DSN science capability and highlights of the engineering work that lead to its development. It will also discuss experience with operations along with statistics and data quality.
radio science X-band Ka-band Deep Space Network Ca↗
Time delay interferometry
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gravitational waves↗
Low-frequency gravitational wave searches using spacecraft Doppler tracking
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gravitational waves↗
Decadal study for radio science investigations in the Deep Space Network
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radio science deep space network DSN↗
Discriminating a gravitational-wave background from intrumental noise using time-delay interferometry
The first in-flight Doppler tracking measurements performed by LISA will be used to assess its detector performance.
Radiation coupling gravitational radiation galaxy↗
Sensitivities of alternate LISA configurations
LISA can be considered as six proof masses, pairwise Doppler tracked with one-way optical links.
Gravitational radiation spacecraft motion↗
Low-Frequency Gravitational Wave Searches Using Spacecraft
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gravitational waves doppler tracking↗
Time-delay analysis of LISA gravitational data: elimination spacecraft motion effects
LISA (Laser Interferometer Space Antenna) is a proposed mission which will use coherent laser beams exchanged between three remote spacecraft to detect and study low-frequency cosmic gravitational radiation.
Laser interferometer space↗
Observed associations between the solar interior, corona, and solar wind
Using polarized brightness (pB) measurements made by the High Altitude Observatory (HAO) Mauna Loa Mk III K-coronameter, we investigate the daily changes of path-integrated density at1.15 R-circle dot.
Density structure ulysses rotation surface↗
Gravitational Wave Sensitivity of Alternate Lisa Configurations
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gravitational waves laser interferometer space ant↗
Discriminating a Gravitational Wave Background from Instrumental Noise using Time-Delay Interferometry
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gravitational waves laser interferometry space ant↗
Apparent Associations Between the Solar Interior, Corona, and Solar Wind
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solar interior corona solar wind↗
Fractional Frequency Stability of Radio Links Through the Solar Wind and Troposphere
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Allan Variance Solar Wind Scintillation↗
Challenges in Earth/Deep-Space Optical Communications
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optical communications↗
Radiowave Scattering in the Outer Heliosphere
The Voyager 1/2 plasma wave instruments have observed low-frequency (1.5-4kHz) radio waves apparently generated near the heliopause. The waves are found in two distinct bands.
scattering angular broadening outer heliosphere↗
Time-Delay Interferometry for Space-based Gravitational Wave Searches
Ground-based, equal-arm-length laser interferometers are being built to measure high-frequency astrophysical graviatational waves. Because of the arm-length equality, laser light experiences the same delay in each arm and thus phase or frequency noise from the laser itself precisely cancels at the photodetector.
gravitational wave searches time-delay interferome↗