Results 111 to 120 of about 1,023 (184)

Commissioning MMS: Challenges and Lessons Learned [PDF]

open access: yes
This paper discusses commissioning of NASA's Magnetospheric MultiScale (MMS) Mission. The mission includes four identical spacecraft with a large, complex set of instrumentation.
Gramling, Cheryl   +4 more
core   +1 more source

MMS Extended Mission Design: Evaluation of a Lunar Gravity Assist Option [PDF]

open access: yes
This paper will describe a study that was carried out on the design of a set of maneuvers that were considered for the later stages of an extended mission of the Magnetospheric Multiscale (MMS) mission.
Godine, Dominic   +6 more
core   +1 more source

Kalman filtering of FDOA/TDOA missile tracking system

open access: yes, 2001
The accuracy of a tracking system designed to determine the time, space and position information (TSPI) of an airborne missile by detecting its telemetry signal at a number of receiver sites is investigated. Doppler frequency measurements are converted to range differences between the missile and receiver sites, whose locations are known in three ...
openaire   +1 more source

Target localization method based on semi-definite relaxation with frequency difference of arrival

open access: yesDianxin kexue
The use of frequency measurements to achieve target positioning is characterized by low cost and high reliability. Using only frequency difference of arrival (FDOA) measurements, a precise localization method for static target position was proposed.
MAO Xiaoting, WU Xiaoping
doaj   +2 more sources

Anti-radar based on metasurface. [PDF]

open access: yesNat Commun
Sun Z   +13 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy