Results 61 to 70 of about 174,298 (206)

L-band ATS 5/Orion/S. S. Manhattan marine navigation and communication experiment Final report [PDF]

open access: yes
L-band signals relayed by synchronous satellite for navigation and data ...
Hanas, O. J.   +3 more
core   +1 more source

SAR deceptive jamming target-detection method based on multi-angle SAR images

open access: yesThe Journal of Engineering, 2019
Deceptive jamming is an effective jamming method for synthetic aperture radar (SAR). Time-delay repeater jamming, which is an important method of deceptive jamming because of its simplicity and effectiveness, can generate false targets in the SAR image ...
Gen Li   +5 more
doaj   +1 more source

A Minimal Solution for Binocular Camera Relative Pose Estimation Based on the Gravity Prior

open access: yesRemote Sensing
High-precision positioning is the foundation for the functionality of various intelligent agents. In complex environments, such as urban canyons, relative pose estimation using cameras is a crucial step in high-precision positioning. To take advantage of
Dezhong Chen   +3 more
doaj   +1 more source

A Novel Method for Designing General Window Functions with Flexible Spectral Characteristics

open access: yesSensors, 2018
In the field of sensor signal processing, windows are time-/frequency-domain weighting functions that are widely applied to reduce the well-known Gibbs oscillations.
Yinghao Sun   +3 more
doaj   +1 more source

Study of a navigation and traffic control technique employing satellites. Volume 3 - User hardware Interim report [PDF]

open access: yes
User hardware configurations and requirements for navigation and air traffic control technique using ...
Estersohn, N., Garabedian, A.
core   +1 more source

An Integrity Monitoring Method for Navigation Satellites Based on Multi-Source Observation Links

open access: yesRemote Sensing
The BeiDou-3 navigation satellite system (BDS-3) has officially provided positioning, navigation, and timing (PNT) services to global users since 31 July 2020.
Jie Xin, Dongxia Wang, Kai Li
doaj   +1 more source

DDMA MIMO radar system for low, slow, and small target detection

open access: yesThe Journal of Engineering, 2019
The low, slow, and small (LSS) target detection has always been a problem for both ground-based and air-borne radar systems. The factors such as weak target reflection energy, ground clutter, and random Doppler component will have a severe impact on ...
Fawei Yang   +3 more
doaj   +1 more source

Shuttle relative navigation of a tethered satellite mission with current on board software [PDF]

open access: yes
A Shuttle mission planned in 1991 will test the feasibility of tethers in space. This mission, a joint effort between Italy and the United States, will connect a satellite (built by the Italians) to the Shuttle with a 20 km long tether.
Lee, Kevin A.
core   +1 more source

Range filtering for sequential GPS receivers with external sensor augmentation [PDF]

open access: yes
The filtering of the satellite range and range-rate measurements from single channel sequential Global Positioning System receivers is usually done with an extended Kalman filter which has state variables defined in terms of an orthogonal navigation ...
Paielli, Russell
core   +1 more source

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