Saab Automobile AB

About: Saab Automobile AB is a based out in . It is known for research contribution in the topics: Radar & Antenna (radio). The organization has 760 authors who have published 890 publications receiving 11811 citations.

Transmit and receive filter optimization for wideband MIMO radar

Abstract: In this paper, we discuss the possibility to suppress interference for wideband multiple-input-multiple-output (MIMO) radar, using only the temporal properties of the signals. The idea is to use tunable filters each connected to a wideband waveform generator, and to derive the optimal power spectral density (PSD) of the resulting signals in a known environment. The metric used to evaluate the enhancement in the system performance is the signal-to-noise and interference ratio (SNIR), from which the optimal transmit and receive filter properties are derived. We discuss two optimization approaches: one alternating and one joint algorithm. Each method is separated into two cases: for a total power constraint and for an individual power constraint on the transmit filters, respectively. Numerical validation illustrates the possibility to suppress the interference in the temporal domain, without actually forming a spatial null in the direction of the interference.

Using the Cocktail Party Effect as Driver Attention Control

Abstract: In the current driving simulator experiment, two different alerting devices, presented to the audio and tactile sense modality respectively, were used to study the effects on driver attention contr...

Verfahren und Vorrichtung für einen Sicherheitsgurt

Abstract: Verfahren zum sicheren Zuruckhalten eines Gurtbenutzers in einem Fahrzeug mittels eines Dreipunktsicherheitsgurtes (2), wo im Falle des Risikos einer Kollision zuerst ein sanftes Straffen eingeleitet wird, um den Gurtbenutzer fur eine etwaige spatere Kollision in eine verbesserte Sitzposition zu bringen und dann ein starkeres Straffen eingeleitet wird, dadurch gekennzeichnet, das Energie fur ein sanftes Straffen durch Herausziehen des Gurtes (2) erzeugt wird, wenn der Gurt angelegt wird, und das diese Energie dann gespeichert und freigegeben wird, wenn ein Risiko einer Kollision besteht.

Comparing measurements of shared situational awareness in a microworld with a developmental environment

Abstract: Two independent experiments were performed where we compared measurements of shared situational awareness in a microworld with similar measures in a developmental environment. After presenting how the two experimental settings are similar/ different the results regarding shared situational awareness are presented and compared. The results indicate that the measurement techniques are comparable over settings.

Wideband Waveform and Receiver Filter Bank Design for Clutter Suppression

Abstract: Modern wideband radar systems with long integration time, equipped with arbitrarily waveform generators, raise a demand for advanced signaling transmission schemes. In this paper, we propose two algorithms to select transmit waveforms and receiver filters. The techniques are based on a clutter suppression criterion. For the first algorithm, we employ an optimized filter bank, and for the second algorithm, we use a matched filter bank. Clutter suppression is achieved by minimizing the correlation between receiver filters and interfering clutter echoes. The algorithm, for the optimized filter bank, is extended to adapt the transmission scheme and receiver filters to a time-evolving scenario. Adaptation parameters are based on estimates of a clutter map and detected target characteristics. To estimate the clutter map we propose a Kalman filter, whereas target parameters are calculated using a least-squares fit to data. The efficiency of the algorithms and the adaptation scheme are visualized through a numerical simulation.