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Method for determining noise floor level and radar using the same

一种噪声本底、雷达的技术，应用在利用再辐射、无线电波的反射/再辐射、测量装置等方向，能够解决不能执行目标特征连续测量、估计噪声本底水平等问题

Active Publication Date: 2008-09-24
DENSO CORP
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  • Abstract
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Problems solved by technology

[0015] The above difficulties lead to the question of how to accurately estimate the noise floor level based on the incoming waves to the radar receiving antenna
This means that no continuous measurement of target characteristics can be performed

Method used

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  • Method for determining noise floor level and radar using the same
  • Method for determining noise floor level and radar using the same
  • Method for determining noise floor level and radar using the same

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Experimental program
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Embodiment Construction

[0053] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Throughout the drawings, the same components are denoted by the same reference numerals.

[0054] figure 1 is a block diagram showing the vehicle-mounted FMCW radar according to the present invention. The FMCW radar detects the distance of an object located within the measurement range and / or the relative speed of an object such as a preceding vehicle.

[0055] Such as figure 1 As shown in , the FMCW radar 2 includes a digital-to-analog (D / A) converter 10 , an oscillator 12 , a splitter 14 , a transmitting antenna 16 and a signal processing unit 30 .

[0056] The D / A converter 10 receives digital data Dm from the signal processing unit 30 and converts the received digital data Dm into an analog signal M. The oscillator 12 receives the analog signal M from the D / A converter 10, thereby generating a radio frequency signal in the millimeter wave band, the...

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Abstract

A method for a radar for detecting a noise floor level of an electric signal corresponding to an incident radio wave received by the radar, the incident radio wave including a return of a radar wave that is transmitted from the radar toward a measuring range of the radar to detect target object characteristic including presence of a target object within the measuring range of the radar, a distance between the target object and the radar, and a relative speed of the target object to the radar is provided. The method includes steps of: calculating a histogram of intensities of frequency components, the frequency components exceeding a predetermined value relating to the measuring range, and extracting an intensity having the maximum height in the histogram as the noise floor level of the electric signal.

Description

technical field [0001] The present invention relates to a method for a radar for determining the noise floor level that increases in response to interference from radar waves emitted from other radars. The present invention also relates to an interference detection device for a frequency modulated continuous wave (FMCW, frequency modulated continuous wave) radar, and an FMCW radar equipped with the interference detection device, which is used for estimating the noise floor level to accurately determine Methods of interference between FMCW radars and other radars. Background technique [0002] Many automotive radar systems are known suitable for vehicle safety systems, such as collision protection systems to minimize the effects of accidents, reversing warning systems to warn drivers that the vehicle is about to back up into objects such as children or other vehicles, etc. Therefore, it is important for these automotive radar systems to provide the driver with some informati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/34G01S7/02
CPCG01S2007/356G01S13/345G01S7/354G01S7/356
Inventor 坂本麻衣
Owner DENSO CORP
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