Unlock instant, AI-driven research and patent intelligence for your innovation.

Phase calibration of a radar system with crosstalk cancellation

A radar system and phase technology, applied in the field of radar sensors, which can solve problems such as the influence of calibration quality

Pending Publication Date: 2021-01-29
INFINEON TECH AG
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In known systems, crosstalk can negatively affect calibration quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phase calibration of a radar system with crosstalk cancellation
  • Phase calibration of a radar system with crosstalk cancellation
  • Phase calibration of a radar system with crosstalk cancellation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] figure 1 A conventional FMCW radar sensor 1 is shown. In this example, separate transmit (TX) and receive (RX) antennas 5 and 6 respectively (bistatic or pseudo-monostatic radar configuration) are used. However, it should be noted that a single antenna could be used, so the receive and transmit antennas would be physically identical (monostatic radar configuration). The transmit antenna 5 (quasi) continuously radiates the RF signal s RF (t), RF signal s RF (t) Frequency modulation with, for example, a sawtooth signal. When the radiation signal s RF (t) When backscattered at an object T located within the field of view of the radar system, the backscattered RF signal y RF (t) is received by the receiving antenna 6 . Object T is often referred to as a "radar target". In a more general example, there may be several targets in the radar sensor's field of view. Further, an antenna array may be used instead of a single RX antenna. Similarly, an antenna array can be u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the disclosure relates to phase calibration of a radar system with crosstalk cancellation. A method for the use in a radar system is described herein. In accordance with one embodiment, the method includes providing a local oscillator signal to an RF output channel of a radar system. The RF output channel is configured to generate, in an enabled state, an RF output signal based on the local oscillator signal. The method further includes determining a first measurement signal based on the local oscillator signal and a first representation of the RF output signal, while the RFoutput channel is disabled, and thus the first measurement signal represents crosstalk. Further, the method includes determining a second measurement signal based on the local oscillator signal and asecond representation of the RF output signal while the RF output channel is enabled. A phase value associated with the RF output channel is determined based on the first measurement signal and the second measurement signal.

Description

technical field [0001] This disclosure relates to the field of radar sensors, and more particularly to the novel concept of phase calibration with crosstalk cancellation. Background technique [0002] Radar sensors can be used in many sensing applications where the distance and velocity of objects are measured. In the automotive sector, there is a growing demand for radar sensors that can be used in so-called advanced driver assistance systems (ADAS). Examples of advanced driver assistance systems are "adaptive cruise control" (ACC) and "radar cruise control" systems. Such a system could be used to automatically adjust the speed of a car to maintain a safe distance from other cars driving ahead. Other examples of advanced driver assistance systems are blind spot monitors, which can use radar sensors to detect other vehicles in the vehicle's blind spots. In particular, a self-driving car may use a large number of sensors, such as radar sensors, to detect and localize vario...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/58G01S13/42G01S7/40G01S7/35
CPCG01S13/584G01S13/42G01S7/354G01S7/352G01S7/4021G01S7/4056G01S13/343G01S13/325G01S7/4069
Inventor V·费奥雷W·阿里奥拉R·科布勒O·朗A·梅尔泽
Owner INFINEON TECH AG