EP1979766A2 - Measuring device - Google Patents
Measuring deviceInfo
- Publication number
- EP1979766A2 EP1979766A2 EP07712030A EP07712030A EP1979766A2 EP 1979766 A2 EP1979766 A2 EP 1979766A2 EP 07712030 A EP07712030 A EP 07712030A EP 07712030 A EP07712030 A EP 07712030A EP 1979766 A2 EP1979766 A2 EP 1979766A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- measuring
- measurement
- unit
- generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005259 measurement Methods 0.000 claims abstract description 77
- 238000012545 processing Methods 0.000 claims abstract description 49
- 238000011156 evaluation Methods 0.000 claims abstract description 46
- 230000003595 spectral effect Effects 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/0209—Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
- G01S13/24—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using frequency agility of carrier wave
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
Definitions
- the invention relates to a measuring device with a signal unit according to the preamble of claim 1.
- Measuring devices which, for the purpose of a measurement, transmit a measuring signal in a specific frequency range, which is received and evaluated by the measuring device as an evaluation signal after an interaction with a test object.
- the desired measurement result is determined by means of a spectral analysis of the measurement signal.
- the invention is based on a measuring device with a signal unit for transmitting a measuring signal in a measuring frequency range adapted for a measurement and an evaluation unit.
- the measuring device has a signal processing unit which is provided to offset a generation signal lying in a generation frequency range for generating the measurement signal from the generation frequency range into the measurement frequency range. This can easily increase flexibility in the application of the meter.
- Measuring instruments can be expanded with little effort and cost.
- existing cost-effective signal generating means can be used to produce the generation signal without having to be specially tuned to the measurement frequency range.
- a signal lying in a frequency range preferably has in its frequency spectrum for each frequency value of the frequency range a signal-to-noise ratio which is greater than one. This can be done simultaneously for all frequency values of the frequency range, eg by generating a pulse.
- the frequency values of the frequency range may be sampled within a certain time interval, such as by frequency modulation of a frequency sharp signal within the frequency range.
- the generation signal is offset, its frequency spectrum can be shifted by one frequency in the frequency scale, the measurement frequency range and the generation frequency range having the same width.
- the generation signal can be set in a measurement frequency range, wherein the measurement frequency range has a different, in particular greater width.
- a "spectral evaluation" of a signal is to be understood as meaning in particular a signal range in which interactions of the measurement signal with the matter for the evaluation of a characteristic quantity relevant to the measurement can be evaluated
- an analysis of the course of the signal as a function of the frequency eg by detecting a peak position or a peak amplitude, can be carried out Alternatively or additionally, the course of the signal can be analyzed as a function of time.
- the measurement signal has a time course with a certain pattern, eg a rectangular or a Gaussian pattern, one can be obtained by an interaction of the measurement ssignals generated with a matter deformation of the pattern in the evaluation signal are detected and evaluated.
- a certain pattern eg a rectangular or a Gaussian pattern
- the signal unit is intended for ultra-wideband operation.
- Ultra-wideband operation is understood as the use of a frequency range with a bandwidth of at least 500 MHz or at least 15% of the center frequency of the frequency range.
- the center frequency is preferably selected in the frequency range from 1 GHz to 15 GHz.
- Ultra-wideband operation can be achieved by sending pulse trains, by sending so-called pseudo-noise sequences, by a frequency-modulated continuous signal or by a frequency shift system.
- the evaluation unit is provided for determining a moisture parameter, a high degree of user comfort can be achieved.
- the evaluation unit is preferably provided in cooperation with the signal processing unit for moisture determination.
- the generation signal can be placed in a measurement frequency range in which interactions with water molecules of a subject under investigation can be evaluated by the evaluation unit for determining a moisture level.
- the signal processing unit is provided for offsetting the generation signal in at least two measurement frequency ranges. This allows a high degree of flexibility in the evaluation of the measurement signal can be achieved.
- the signal processing unit is provided to offset the generation signal at least substantially simultaneously into the measurement frequency ranges, a broad measurement signal extending over at least two measurement frequency ranges can be achieved. These measuring ranges can be separated from each other. As a result, certain areas of the frequency scale can be omitted, wherein an undesirable power distribution of the measurement signal over frequency ranges that are unmatched for a measurement, and a filtering effort can be avoided.
- the measuring frequency ranges form a coherent measuring frequency section.
- elaborate broadening methods for broadening the generation frequency range can be advantageously avoided.
- the signal processing unit can be used if it has a modulation unit for modulating the generation signal with at least one modulation signal.
- the evaluation unit is supplied with a processing signal of the signal processing unit provided for displacing the generation signal during operation. As a result, components for processing the evaluation signal can advantageously be saved.
- the meter is designed as a tracking device. This can be a location of objects with high accuracy can be achieved.
- Fig. 1 a locating device on a wall
- Fig. 2 shows a measuring unit of the locating device from FIG. 1 in a schematic representation
- Fig. 3 a broadband signal in an amplitude-time representation
- Fig. 4 frequency spectra of measuring signals which are offset in two measuring frequency ranges and
- Fig. 5 shows another frequency spectrum of a measuring signal.
- FIG. 1 shows a measuring device designed as a locating device 10.
- the locator 10 provides information about objects hidden in or behind an object of investigation, eg, a wall, floor, ceiling, etc. Examples of these objects are water pipes, electrical cables, etc.
- a wall 12 is schematically shown, in which such an object 14 is arranged.
- the locating device 10, which is approximated to the wall 12, allows an operator, the examined wall 12, a characteristic P formed in the wall 12 as a position of the object 14, the extent and / or This is realized with the aid of a measuring unit 18 which is provided for the purpose of determining this information by processing high-frequency signals.
- the measuring unit 18 has a signal unit 20, by means of which high-frequency measuring signals 22.1, 22.2 are generated and coupled into the wall 12.
- a signal unit 20 by means of which high-frequency measuring signals 22.1, 22.2 are generated and coupled into the wall 12.
- one measuring signal 22.1 or 22.2 is transmitted in two measuring directions 32, 33.
- the transmission in the measuring direction 32 takes place via a sensor means 24.1 embodied as an antenna element, while the measuring signal 22.2 is transmitted via a sensor means 24.2 likewise designed as an antenna element.
- only one measuring direction 32 or only one sensor means 24.1 is shown in FIG. 1 (see also FIG. 2).
- the measuring directions 32, 33 may be formed, for example, as a horizontal and vertical direction.
- transmission in both measuring directions 32, 33 is effected by a sensor means, for example the sensor means 24.1 designed as an antenna element. It is also conceivable that a measurement signal in only one direction, for example, the direction 32, is sent. Furthermore, the sensor means 24.1, 24.2 can be designed as monostatic and / or bistatic antenna elements.
- the transmitted measurement signals 22.1, 22.2 are generated in the signal unit 20 by a generation signal 26, which is produced in a signal generation unit 28 and processed in a signal processing unit 30.
- the measurement signals 22.1, 22.2 rain evaluation signals 34.1, 34.2 in the wall 12, which are received by the sensor means 24.1, 24.2. Upon receipt, these are given to an evaluation unit 36.
- the evaluation unit 36 performs an evaluation of the frequency spectrum of the evaluation signals 34.1, 34.2 in measurement results, which are displayed on the display 16. On the display 16, the wall 12, the parameter P of the object 14, the locating device 10 itself and its direction of movement relative to the wall 12 can be seen.
- the operator may also be informed of a characteristic F formed as the degree of humidity of the wall 12.
- the generation signal 26 in the signal processing unit 30 is processed such that the measurement signals 22.1, 22.2 are adapted to a measurement of the parameter F in the wall 12.
- the structure and operation of the signal processing unit 30 can be seen in FIG.
- the operator can select different measuring processes via an operating unit 38, e.g. Measurements in which only the first measurement mode, i. a location of the object 14, measuring operations in which only the second measurement mode, i. a determination of the characteristic F, or measurement processes in which both
- Measurement modes are turned on. Alternatively or additionally, a moisture profile in the wall 12 can be determined in this second measurement mode.
- FIG. 1 A schematic representation of the measuring unit 18 is shown in FIG. In this section, the description also refers to Figures 3 to 5.
- the signal generating unit 28, the signal processing unit 30 and the sensor means 24.1, 24.2 of the signal unit 20 and the evaluation unit 36 can be seen. It is assumed that the operator selects, via the operation unit 38, a measurement operation in which the first and second measurement modes are performed.
- the first measurement mode in particular, a certain type of plastic from which the object 14 is made is intended to be detected for locating the object 14, while the characteristic variable F of the wall 12 is to be determined in the second measurement mode.
- the signal generating unit 28 which is implemented as an SR diode (step-recovery diode), of a
- Control unit 40 is put into operation.
- pulses 44 wherein the pulses 44 are each generated with a pulse duration At of 0.5 ns and follow each other regularly.
- the use of a transistor or a transistor circuit is also conceivable.
- a time interval between two directly successive pulses 44 which is selected to be constant in this exemplary embodiment, can also be designed as a random variable.
- the sequence can be executed as a PN sequence (pseudo-noise sequence or pseudo noise sequence).
- the generation signal 26 can be produced as a frequency-modulated continuous signal (FMCW or Frequency Modulated Continuous Wave).
- the generation signal 26 is fed to a filter 46. After filtering, the generating signal points
- the generation signal 26 shows an amplitude-frequency representation in FIG. 4. shows the frequency spectrum.
- the generation signal 26 has a center frequency V EM of 5 GHz and extends over a generation frequency range 48, which corresponds to a bandwidth ⁇ v of 2 GHz around the center frequency V EM .
- the generation signal 26 is then fed to the signal processing unit 30.
- This is designed as a modulation unit, which has a signal generation unit 50, a switching device 52 and a mixing unit 54.
- the signal generating unit 50 may alternatively be referred to as a voltage controlled oscillator (VCO or Voltage Controlled Oscillator), a resonant circuit, a capacitance diode
- one of the processing signals 56, 58 may be formed as a modulation signal for modulating the generation signal 26, or the generation signal 26 may be processed with both processing signals 56, 58 formed as modulation signals. Processing of the generation signal 26 with more than two processing signals is conceivable.
- the processing signal 56 or 58 is assigned to the first or second measurement mode. In the first measurement mode, the processing signal 56 is applied to the mixing unit 54, whereby the generation signal 26 is offset from the generation frequency range 48 into a first measurement frequency range 60. This is shown in Figure 4 by a solid arrow.
- the generation signal 26, which is offset in this first measurement frequency range 60, represents a measurement signal 22, which is sent after division as a measurement signal 22.1, 22.2.
- the first measuring frequency range 60 is chosen such that the measuring signals 22.1, 22.2 coupled into the wall 12 interact with molecules of the artificial substance to be detected, thereby enabling an evaluation based on the frequency spectrum of the evaluating signals 34.1, 34.2 for determining the position P of the object 14 .
- the processing signal 58 is applied to the mixing unit 54, whereby the generation signal 26 is offset from the generation frequency range 48 into a second measurement frequency range 62. This is shown by a dashed arrow.
- the measurement signal 22 generated thereby has a center frequency V M2 of 8.5 GHz and also extends over the second measurement frequency range 62 with the bandwidth ⁇ v of 2 GHz.
- the second measuring frequency range 62 is tuned such that the measuring signals 22.1, 22.2 interact with water molecules of the wall 12, whereby a determination of the characteristic variable F by a spectral evaluation of the corresponding evaluation signals 34.1, 34.2 is possible.
- the locating device 10 is provided with a further measuring operation, in which the generating signal 26 is simultaneously offset from the generating frequency range 48 in two measuring frequency ranges.
- the generation signal 26 is simultaneously placed in the measurement frequency ranges 60, 62 by applying both processing signals 56, 58 to the mixing unit 54 through the switching device 52.
- the signal processing unit 30 may include two modulation units each serving to modulate the generation signal 26 with a processing signal.
- a measurement frequency section of the frequency scale designed specifically for a specific measurement can be achieved simply and with great flexibility.
- a measuring frequency section 64 is formed by the separate measuring frequency ranges 60, 62.
- a coherent measuring frequency section 66 is formed by two overlapping measuring frequency ranges 68, 70 into which the generating signal 26 (dashed line in the figure) is formed. is offset by the signal processing unit 30 simultaneously.
- the generation signal 26 may represent the measurement signal 22 by turning off the signal processing unit 30 or modulating the generation signal 26 with a constant processing signal.
- the measuring signal 22 is then applied to a signal divider 72, in which it is split into the two measuring signals 22.1, 22.2.
- the measuring signals 22. 1, 22. 2 have a substantially identical signal power, which is given by half the power of the measuring signal 22.
- An alternative division of the signal power of the measurement signal 22 to the measurement signals 22.1, 22.2 is conceivable. In the division can also be one of the measurement signals
- the measurement signals 22.1, 22.2 are respectively applied via a signal separation unit 74.1 or 74.2 to a switching device 76.1 or 76.2.
- the switching device 76.1 or 76.2 which is controllable by the control unit 40, the measurement signal 22.1 or 22.2 either on a reference circuit 78 for calibration of the locating device 10 or on the sensor element 24.1 or
- the measuring signals 22.1, 22.2 transmitted by the sensor elements 24.1, 24.2 in the form of electromagnetic radiation have different polarization directions. It is also conceivable that the signal unit 20 a sensor means for each measuring frequency range, for example, the measuring frequency ranges 60, 62, the measuring signal 22 has.
- the measurement signals 22.1, 22.2 stimulate evaluation signals 34.1 and 34.2, respectively, which are received by the sensor elements 24.1, 24.2.
- the evaluation signals 34.1, 34.2 are respectively separated from the measurement signals 22.1, 22.2 in the signal separation unit 74.1 or 74.2 designed as a circulator and applied to the evaluation unit 36.
- the evaluation unit 36 has two modulation units 80, 82 for demodulating the evaluation signals 34.1, 34.2.
- the modulation units 80, 82 are connected to the signal processing unit 30. On the modulation units 80, 82 is given via a line 84 at least one processing signal, which is used to process the generation signal 26 26, such. the processing signal 56 and / or the processing signal 58. After demodulation the evaluation signals 34.1, 34.2 are given to a signal processing device 86.
- This comprises an analog-to-digital converter 88 and a data processing unit 90, which is provided for the spectral evaluation of the evaluation signals 34.1, 34.2.
- This is e.g. designed as a DSP unit (Digital Signal Processing or Digital Signal Processing).
- DSP unit Digital Signal Processing or Digital Signal Processing
- an average value of the evaluation signals 34.1, 34.2 can optionally be formed, whereby an increase in the signal-to-noise ratio can be achieved.
- a correlation of the evaluation signals 34.1, 34.2 with a reference signal 92 can optionally be carried out in the signal processing device 86.
- the correlation result is then sampled and converted analog / digital.
- the reference signal 92 the generation signal 26 is used in this embodiment.
- the measurement signal 22 can be used.
- the evaluation signals 34.1, 34.2 after analog / digital conversion can be correlated with the reference signal 92, for example in the data processing unit 90.
- the use of digital filters is conceivable, by means of which a measurement result can be improved.
- evaluation results are given to the display 16 ( Figure 1) and displayed by this.
- the locating device 10 can be used to expand the functionality in the detection of hidden objects in addition to
- Measuring unit 18 further measuring units are used, which are based on inductive and / or capacitive methods. Switching between these measuring units and the measuring unit 18 could be done manually by an operator or automatically.
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Radar Systems Or Details Thereof (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006002666A DE102006002666A1 (en) | 2006-01-19 | 2006-01-19 | gauge |
PCT/EP2007/050322 WO2007082855A2 (en) | 2006-01-19 | 2007-01-15 | Measuring device comprising a signal unit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1979766A2 true EP1979766A2 (en) | 2008-10-15 |
Family
ID=38180249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07712030A Withdrawn EP1979766A2 (en) | 2006-01-19 | 2007-01-15 | Measuring device |
Country Status (5)
Country | Link |
---|---|
US (1) | US8493076B2 (en) |
EP (1) | EP1979766A2 (en) |
JP (1) | JP5284107B2 (en) |
DE (1) | DE102006002666A1 (en) |
WO (1) | WO2007082855A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007043488A1 (en) * | 2007-09-12 | 2009-03-19 | Robert Bosch Gmbh | Ultra-wideband transmitter unit |
DE102009027666A1 (en) * | 2009-07-14 | 2011-01-20 | Robert Bosch Gmbh | UWB measuring device |
US8731333B2 (en) | 2010-04-06 | 2014-05-20 | Jeffrey M. Sieracki | Inspection of hidden structure |
JP1559411S (en) * | 2015-11-27 | 2016-09-26 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3806795A (en) * | 1972-01-03 | 1974-04-23 | Geophysical Survey Sys Inc | Geophysical surveying system employing electromagnetic impulses |
US4204833A (en) * | 1978-02-06 | 1980-05-27 | Scotty Vent Dampers | Safety control for furnace burner |
US4504833A (en) * | 1981-12-09 | 1985-03-12 | Xadar Corporation | Synthetic pulse radar system and method |
US5357253A (en) * | 1993-04-02 | 1994-10-18 | Earth Sounding International | System and method for earth probing with deep subsurface penetration using low frequency electromagnetic signals |
US5867117A (en) * | 1996-12-13 | 1999-02-02 | The University Of Kansas, Center For Research, Incorporated | Swept-step radar system and detection method using same |
CA2318074A1 (en) | 1998-01-16 | 1999-07-22 | Ball Corporation | Reduction of radar antenna area |
US6344818B1 (en) * | 1998-05-22 | 2002-02-05 | Yuri Markov | Apparatus and method for the detection of materials |
DE19915017B4 (en) * | 1998-10-15 | 2006-09-14 | Hilti Ag | Method and its use for determining the relative dielectric constant of concrete |
JP2002181920A (en) * | 2000-12-19 | 2002-06-26 | Mitsubishi Electric Corp | Radar device |
US6784671B2 (en) * | 2002-02-04 | 2004-08-31 | Mississippi State University | Moisture and density detector (MDD) |
JP2005010130A (en) * | 2003-06-18 | 2005-01-13 | Kumataka Engineering:Kk | Measuring apparatus for distance or the like |
DE102004007315A1 (en) * | 2004-02-14 | 2005-08-25 | Robert Bosch Gmbh | Short-range radar unit for detecting objects in a medium, e.g. for detecting reinforcement bars or electrical wiring buried in a wall, has one or more additional sensors, e.g. inductive, capacitive, photometric or infrared |
DE102004031627A1 (en) * | 2004-06-30 | 2006-02-02 | Robert Bosch Gmbh | Method and device for the material-penetrating location of a measuring signal |
US6967612B1 (en) * | 2004-10-22 | 2005-11-22 | Gorman John D | System and method for standoff detection of human carried explosives |
JP2006200766A (en) | 2005-01-18 | 2006-08-03 | Corona Corp | Control device of electric apparatus |
US7236120B2 (en) * | 2005-03-31 | 2007-06-26 | United States Of America As Represented By The Secretary Of Commerce, The National Institute Of Standards And Technology | Ultra-wideband detector systems for detecting moisture in building walls |
-
2006
- 2006-01-19 DE DE102006002666A patent/DE102006002666A1/en not_active Ceased
-
2007
- 2007-01-15 US US12/160,451 patent/US8493076B2/en not_active Expired - Fee Related
- 2007-01-15 EP EP07712030A patent/EP1979766A2/en not_active Withdrawn
- 2007-01-15 WO PCT/EP2007/050322 patent/WO2007082855A2/en active Application Filing
- 2007-01-15 JP JP2008550732A patent/JP5284107B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
JP5284107B2 (en) | 2013-09-11 |
JP2009524033A (en) | 2009-06-25 |
US20100156391A1 (en) | 2010-06-24 |
DE102006002666A1 (en) | 2007-07-26 |
WO2007082855A3 (en) | 2008-10-16 |
US8493076B2 (en) | 2013-07-23 |
WO2007082855A2 (en) | 2007-07-26 |
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