Augmented reality with non-line-of-sight perception
US-2024096034-A1 · Mar 21, 2024 · US
Enhanced radar range resolution
US9103918B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103918-B2 |
| Application number | US-201213688543-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 29, 2012 |
| Priority date | Nov 29, 2012 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A synthetic aperture radar imaging method that combines each radar return pulse with a sinusoid to reduce the radar return pulses to a baseband frequency and deskew each radar return pulse. It includes determining a maximum likelihood estimate (MLE) of residual motion parameters for a dominant scatterer on the ground relative to the airborne radar and correcting for errors in inertial navigation system measurements based on the MLE residual motion parameters. It includes convolving each radar return pulse with its corresponding radar transmission pulse to generate a range compressed image for each radar return pulse and generating a sub-band range profile image for each radar return pulse and its corresponding radar transmission pulse based on the corresponding range compressed image that has been corrected for residual motion. Performing bandwidth extrapolation on each sub-band and subsequently combining the three bands to produce an enhanced resolution image without grating lobes.
First claim
Opening claim text (preview).
The invention claimed is: 1. An improved method of operating radar hardware/software apparatus mounted on a moving airplane and used to implement radar image tracking of a ground region of interest and including a transmitter to emit pulse trains torward said region, a receiver to receive return pulses from said region, and a processor to process the return pulses, the transmission and recipt being via one or more antennas and in different frequency bands, the method improvement co…
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Physics · mapped topic
- G01S13/90Primary
Physics · mapped topic
- G01S13/9004Primary
Physics · mapped topic
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- What does patent US9103918B2 cover?
- A synthetic aperture radar imaging method that combines each radar return pulse with a sinusoid to reduce the radar return pulses to a baseband frequency and deskew each radar return pulse. It includes determining a maximum likelihood estimate (MLE) of residual motion parameters for a dominant scatterer on the ground relative to the airborne radar and correcting for errors in inertial navigatio…
- Who is the assignee on this patent?
- Raytheon Co
- What technology area does this patent fall under?
- Primary CPC classification G01S13/90. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).