| 1. |
- Heining, Simon, et al.
(författare)
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An Ultra Broadband Multi-Tone Six-Port Radar for Distance Measurements in K-Band Waveguides
- 2020
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Ingår i: Proceedings of the 2020 IEEE Radio and Wireless Symposium (RWS). - : IEEE. - 9781728111209 ; , s. 279-282
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Konferensbidrag (refereegranskat)abstract
- Continuous wave (CW) radars show an excellent performance in high precision distance measurements. However, when it comes to absolute distances, the ambiguity of these systems is a notable issue. To extend the unambigous range beyond λ/2, dual tone systems have been presented using two spaced CW measurements. In this paper, a broadband multi-tone radar operating in the K-band using six-port technology is presented. By using more than two frequencies, the unambigous range can be further enlarged. The radar system presented in this paper is able to perform 5-FSK measurements within a bandwidth of 5.5GHz delivering an update rate of 25Hz and a precision of 37.96µm.
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| 2. |
- Rameez, Muhammad, 1988-, et al.
(författare)
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Experimental Evaluation of Adaptive Beamforming for Automotive Radar Interference Suppression
- 2020
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Ingår i: IEEE Radio and Wireless Symposium. - : IEEE. - 9781728111209 ; , s. 183-186
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Konferensbidrag (refereegranskat)abstract
- Mutual interference between automotive radars can make it difficult to detect targets, especially the weaker ones, such as cyclists and pedestrians. In this paper, the interference suppression performance of a Least Mean Squares (LMS) algorithm-based adaptive beamformer is evaluated using measurements from a 77 GHz Frequency Modulated Continuous Wave (FMCW) radar in an outdoor environment. It is shown that the adaptive beamformer increases detection performance and that the interference is suppressed down to the noise floor of the radar in the Range-Doppler domain. In the paper, real baseband sampling and complex-baseband sampling (IQ) radar receivers are compared in the context of interference suppression. The measurements show that IQ receivers are more beneficial in the presence of interference.
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