公开(公告)号：US20240369683A1

公开(公告)日：2024-11-07

申请号：US18653825

申请日：2024-05-02

Applicant: NXP B.V.

Inventor： Wolfgang Küchler ,  David Lugitsch

IPC: G01S7/41 ,  G01S13/87 ,  H04L25/02

Abstract: A radar system can improve performance by estimating a channel impulse response (CIR) in a way that accounts for noise arising from asymmetric interference. The system transmits a first channel-sounding sequence (CSS) that includes a first pulses and a second CSS that includes second pulses. The second pulses are complements of the first pulses. A first CIR corresponding to the first CSS and a second CIR corresponding to the second CSS are combined to produce an overall CIR that reduces or eliminates artefacts caused by asymmetric interference.

公开(公告)号：US20230142169A1

公开(公告)日：2023-05-11

申请号：US17936887

申请日：2022-09-30

Applicant: NXP B.V.

Inventor： David Lugitsch ,  Reinhold Schmidt

IPC: G01S13/534 ,  G01S7/41

CPC classification number: G01S13/534 ,  G01S7/415 ,  G01S7/414

Abstract: It is described a radar system (100), comprising:

i) a transmitter (110) having a transmitter carrier characteristic, configured to transmit a code signal (S);
ii) a receiver (120) having a receiver carrier characteristic, configured to receive an echo (E) of the code signal (S); and
iii) a control unit (130) configured to:
a) identify a carrier characteristic tracking path (T) between the transmitter (110) and the receiver (120),
b) estimate an offset between the transmitter carrier characteristic and the receiver carrier characteristic based on the identified tracking path (T), and
c) compensate for the offset, in particular establish coherency, based on the estimation.
iv) The tracking path (T) comprises hereby a communication path that is at least partially independent of the code signal (S) and the echo (E) of the code signal (S).

公开(公告)号：US20240402293A1

公开(公告)日：2024-12-05

申请号：US18657171

申请日：2024-05-07

Applicant: NXP B.V.

Inventor： Helmut Kranabenter ,  David Lugitsch ,  Wolfgang Küchler

IPC: G01S7/40 ,  G01S7/285

Abstract: The dynamic range of the output of a radar system with a transmitter and receiver can be optimized by determining the phase of a radar reflection signal at the receiver and adjusting the phase so that the in-phase and quadrature components of the signal have equal amplitudes. The phase can be adjusted at the receiver or by adjusting the phase of the output signal at the transmitter.