Simulation and test results of triangular fast ramp FMCW waveform

Kim, Seok; Paek, Inchan; Ka, Min-Ho

doi:10.1109/radar.2013.6586092

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Frequency-modulated continuous wave (FMCW) is a widely used radar waveform that can measure distance and velocity, and its main advantage is low equipment cost [16]. The FMCW radar transmits the frequency-modulated continuous wave signal, and the distance and velocity information of the target can be extracted by fast Fourier transform (FFT) on the beat signal of the radar echo [17]. The GB/T 21255-2019 stipulates that the microwave transmission frequency of the radar velocimeter can be used in X-band (8 GHz to 12 GHz), K-band (18 GHz to 26.5 GHz), and Kaband (26.5 GHz to 40 GHz).…”

Section: Measurement Mechanism Of Multitarget Radar Velocimetermentioning

confidence: 99%

Development of Verification Device for Multitarget Radar Velocimeter Based on Echo Signal Simulation Technology

et al. 2022

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Speeding is one of the leading causes of traffic crashes worldwide. Radar velocimeter is widely used in the capture monitoring of road overspeed violations, which can effectively reduce the probability of traffic accidents and protect people’s life and property safety to the greatest extent. As a new type of radar velocimeter, multitarget radar velocimeter (MTRV) can monitor the speed of more than two vehicles at the same time. However, the verification method and device of MTRV’s performance need to be studied. In order to solve the problem of performance verification for MTRV, a verification device based on echo signal simulation technology is developed in this paper. The measurement mechanism of MTRV with different performance including velocity, distance, and angle is first introduced. Then, a verification method based on the echo signal simulation technology is proposed. The verification device can receive the emission signal of MTRV and process the signal by echo simulation technology, including target generation, Doppler frequency shift, time delay, and angel control, and targets are simulated with nominal velocity, distance, and angle value. The processed echo signal with simulated nominal parameter values is reflected to the MTRV. After the echo signal is received and processed by MTRV, the measurement values of simulated velocity, distance, and angle for targets are obtained. Comparing the measured values of the MTRV with the simulated nominal values of the verification device, the measurement error of MTRV is obtained. The verification device of MTRV is realized to verify the accuracy and reliability of the MTRV measurement results. The simulated velocity range of the verification device is up to (-300~300) km/h, and the simulated distance range of the verification device is up to (10~45) m when the simulated incident angle range was within the range of (-60~60)°. The simulation target generation for the two targets of the device is also verified. And the maximum permissible error (MPE) of the simulated velocity was ±0.05 km/h, the MPE of simulated distance is ±0.3 m, and the MPE of simulated angle is ±0.2°. Finally, the verification and uncertainty evaluation results of the MTRV sample validated the effectiveness and feasibility of the proposed verification method and the developed verification device of MTRV.

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Section: Measurement Mechanism Of Multitarget Radar Velocimetermentioning

confidence: 99%

Development of Verification Device for Multitarget Radar Velocimeter Based on Echo Signal Simulation Technology

et al. 2022

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“…A triangular modulation is preferred instead of a sawtooth one because it allows to avoid problems related to the recovery time of the VCO. Simple digital signal processing allows us to threat a triangular LFMCW waveform as a sawtooth one at the expenses of an halved useful repetition frequency [7]. The trend of the instantaneous frequency synthesized by the PLL is depicted in Fig.4.…”

Section: System Parameters Designmentioning

confidence: 99%

X-band compact low cost multi-channel radar prototype for short range high resolution 3D-InISAR

Lischi

Massini

Stagliano

et al. 2014

2014 11th European Radar Conference

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In this paper an X-band multi-channel radar prototype (PIRAD) for short range high resolution interferometric 3D inverse SAR imaging (3D-InISAR) is presented. The proposed radar sensor is characterized by compact dimensions, low power consumption, low electromagnetic pollution and low cost. An innovative compact, stationary, large beamwidth interferometric antenna system was designed and developed for this particular task. The LFMCW waveform is generated by a microcontrolled PLL based frequency synthesizer. A three channels Low-IF direct down conversion receiver was developed. Open source universal software radio peripherals are used to sample the beat signals and to interface with a general purpose PC through an Ethernet interface. Preliminary tests in a real scenario have been carried out in order to test the effectiveness of the PIRAD system in ISAR imaging and 3D reconstruction capabilities.

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Three-band triangular linearly frequency-modulated continuous-wave microwave photonic radar based on the gain-switched DFB laser

Chen,

Pu,

Zheng

et al. 2024

Opt Quant Electron

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Simulation and test results of triangular fast ramp FMCW waveform

Cited by 7 publications

References 2 publications

Development of Verification Device for Multitarget Radar Velocimeter Based on Echo Signal Simulation Technology

Development of Verification Device for Multitarget Radar Velocimeter Based on Echo Signal Simulation Technology

X-band compact low cost multi-channel radar prototype for short range high resolution 3D-InISAR

Three-band triangular linearly frequency-modulated continuous-wave microwave photonic radar based on the gain-switched DFB laser

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