Invention Application
- Patent Title: INTERFEROMETRIC DISTANCE-MEASURING METHOD WITH DELAYED CHIRP SIGNAL AND SUCH AN APPARATUS
- Patent Title (中): 具有延迟信号的等距离测量方法及其设备
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Application No.: US12937529Application Date: 2009-05-29
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Publication No.: US20110051146A1Publication Date: 2011-03-03
- Inventor: Thomas Jensen , Marcel Rohner
- Applicant: Thomas Jensen , Marcel Rohner
- Applicant Address: CH Heerbrugg
- Assignee: LEICA GEOSYSTEMS AG
- Current Assignee: LEICA GEOSYSTEMS AG
- Current Assignee Address: CH Heerbrugg
- Priority: EP08104146.9 20080528
- International Application: PCT/AZ09/00003 WO 20090529
- Main IPC: G01S17/36
- IPC: G01S17/36 ; G01S7/481 ; G01S7/499

Abstract:
In a distance-measuring method comprising a distance-measuring apparatus having at least one frequency-modulatable laser source for producing chirped laser radiation. The laser radiation has radiation components with opposite chirp as time dependency of the modulated wavelengths, the simultaneous oppositeness of the frequency curve being realized via an optical delay path (3) for one of the two radiation components. The radiation produced is passed in a measuring interferometer (5) to a target (6) and parallel via a local Oscillator. After reception of the laser radiation scattered back from the target (6) and passed via the local oscillator path, the laser radiation received is converted into signals and the distance to the at least one target (6) is determined from the signals on the basis of interferometric mixing.
Public/Granted literature
- US08654342B2 Interferometric distance-measuring method with delayed chirp signal and such an apparatus Public/Granted day:2014-02-18
Information query
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