Abstract: This document describes interleaving chirps for unambiguous range rate estimation. A signal model quickly and unambiguously estimates range rates for any chirp within one frame. During each frame, a transmission of radar signals is caused by interleaving two different groups of chirps (e.g., up-chirps and down-chirps) in an ordered sequence. This unique pattern of chirps enables the signal model to compute an ambiguity term for each frame (e.g., an ambiguity variable for each group). The ambiguity term is often not zero. With ambiguity considered for the frame, range rate estimates can be provided without ambiguity. When applied to a solution for estimating range rate, the ambiguity term allows quick, and unambiguous results to be obtained for any possible detection. Ambiguity is resolved without having to analyze multiple frames. This increase in accuracy and performance enables wider adoption of radar and may promote safe driving.

Abstract: An apparatus for endotracheal intubation. The apparatus allows medical personnel to grip and stabilize a bougie inside the apparatus and maintain a curved orientation during the intubation processes. The apparatus includes a locking ring for retaining the bougie during use.

Abstract: This document describes techniques, apparatuses, and systems for movement compensation for multi-dimensional radar signal processing. A radar system receives radar signals reflected off of an object, and a two-dimension representation of the reflections is generated in the frequency domain. The two-dimensional representation illustrates attributes of the radar signals with respect to a fast-time dimension and a slow-time dimension. An energy peak within this two-dimensional representation is determined. Data associated with the energy peak, including a range and range rate, are determined from compensating the energy peak for movement of the object within a single frame. This compensation can include adjusting frequencies associated with the energy peak in the fast-time dimension and/or the slow-time dimension. The data associated with the energy peak is output to enable radar tracking with more accurate range and range rates measurements than can be output without performing movement compensation.

Abstract: This document describes techniques, apparatuses, and systems for a parameter defined stepped frequency waveform for a radar system. A radar system transmits radar transmit signals including a parameter defined stepped frequency waveform with a specific change in frequency between chirps. The specified change in frequency may increase the signal to noise ratio of radar receive signals reflected off an object in the field of view. The radar receive signals may then be transformed into the frequency domain to determine a range and range rate of the object in the field of view. The range and range rate determined from the representation of the radar receive signals in the frequency domain may be output to a radar tracker to enable tracking of the object in the field of view. In doing so, accurate radar tracks may be generated that robustly track objects in the field of view of the radar system.

Abstract: An apparatus for endotracheal intubation. The apparatus allows medical personnel to grip and stabilize a bougie inside the apparatus and maintain a curved orientation during the intubation processes. The apparatus includes a locking ring for retaining the bougie during use.

Abstract: An apparatus for endotracheal intubation. The apparatus allows medical personnel to grip and stabilize a bougie inside the apparatus and maintain a curve position during intubation processes. The apparatus can be used for a solid bougie and/or a hollow bougie. The apparatus may further have a connector for connecting the apparatus to an external suction device or oxygen delivery device.

Abstract: An apparatus for endotracheal intubation. The apparatus allows medical personnel to grip and stabilize a bougie inside the apparatus and maintain a curve position during intubation processes. The apparatus can be used for a solid bougie and/or a hollow bougie. The apparatus may further have a connector for connecting the apparatus to an external suction device or oxygen delivery device.