Homodyne FMCW radar range resolution effects with sinusoidal nonlinearities in the frequency sweep

2002 ◽  
Author(s):  
S.O. Piper
Keyword(s):  
Frequency Sweep ◽  
Range Resolution ◽  
Fmcw Radar

Neural Networks to Increase Range Resolution of FMCW Radar

2020 ◽  
Vol 4 (8) ◽  
pp. 1-4
Author(s):  
Maxime Schutz ◽  
Cyril Decroze ◽  
Michele Lalande ◽  
Bertrand Lenoir
Keyword(s):  
Neural Networks ◽  
Range Resolution ◽  
Fmcw Radar

scholarly journals Reconfigurable Range-Doppler Processing and Range Resolution Improvement for FMCW Radar

2019 ◽  
Vol 19 (20) ◽  
pp. 9294-9303 ◽  
Author(s):  
Sharef Neemat ◽  
Faruk Uysal ◽  
Oleg Krasnov ◽  
Alexander Yarovoy
Keyword(s):  
Range Resolution ◽  
Fmcw Radar ◽  
Resolution Improvement

Method of doubling range resolution without increasing bandwidth in FMCW radar

2015 ◽  
Vol 51 (12) ◽  
pp. 933-935 ◽  
Author(s):  
Yake Li ◽  
Siu O'Young
Keyword(s):  
Range Resolution ◽  
Fmcw Radar

A SiGe-based fully-integrated 122-GHz FMCW radar sensor in an eWLB package

2017 ◽  
Vol 9 (6) ◽  
pp. 1219-1230 ◽  
Author(s):  
Muhammad Furqan ◽  
Faisal Ahmed ◽  
Reinhard Feger ◽  
Klaus Aufinger ◽  
Walter Hartner ◽  
...  
Keyword(s):  
Antenna Arrays ◽  
High Performance ◽  
Continuous Wave ◽  
Supply Voltage ◽  
Angular Position ◽  
Frequency Multiplier ◽  
Wafer Level ◽  
Range Resolution ◽  
Fmcw Radar ◽  
Bicmos Technology

High-performance SiGe HBTs and advancements in packaging processes have enabled system-in-package (SiP) designs for millimeter-wave applications. This paper presents a 122-GHz bistatic frequency modulated continuous wave (FMCW) radar SiP. The intended applications for the SiP are short-range distance and angular position measurements as well as communication links between cooperative radar stations. The chip is realized in a 130-nm SiGe BiCMOS technology and is based on a fully differential frequency-multiplier chain with in phase quadrature phase receiver and a binary phase shift keying modulator in the transmit chain. On-wafer measurement results show a maximum transmit output power of 2.7 dBm and a receiver gain of 11 dB. The chip consumes a DC power of 570 mW at a supply voltage of 3.3 V. The fabricated chip is integrated in an embedded wafer level ball grid array (eWLB) package. Transmit/receive rhombic antenna arrays with eight elements are designed in two eWLB packages with and without backside metal, with a measured peak gain of 11 dBi. The transceiver chip size is 1.8 mm × 2 mm, while the package size is 12 mm × 6 mm, respectively. FMCW measurements have been conducted with a sweep bandwidth of up to 17 GHz and a measured range resolution of 1.5 cm has been demonstrated. 2D positions of multiple targets have been computed using two coherently linked radar stations.

scholarly journals Signal Expansion Method in Indoor FMCW Radar Systems for Improving Range Resolution

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4226
Author(s):  
Seongmin Baek ◽  
Yunho Jung ◽  
Seongjoo Lee
Keyword(s):  
High Performance ◽  
Beat Frequency ◽  
Expansion Method ◽  
Autonomous Driving ◽  
Side Lobe ◽  
Modulation Bandwidth ◽  
Multiple Targets ◽  
Range Resolution ◽  
Fmcw Radar ◽  
Adaptive Mirror

As various unmanned autonomous driving technologies such as autonomous vehicles and autonomous driving drones are being developed, research on FMCW radar, a sensor related to these technologies, is actively being conducted. The range resolution, which is a parameter for accurately detecting an object in the FMCW radar system, depends on the modulation bandwidth. Expensive radars have a large modulation bandwidth, use the band above 77 GHz, and are mainly used as in-vehicle radar sensors. However, these high-performance radars have the disadvantage of being expensive and burdensome for use in areas that require precise sensors, such as indoor environment motion detection and autonomous drones. In this paper, the range resolution is improved beyond the limited modulation bandwidth by extending the beat frequency signal in the time domain through the proposed Adaptive Mirror Padding and Phase Correction Padding. The proposed algorithm has similar performance in the existing Zero Padding, Mirror Padding, and Range RMSE, but improved results were confirmed through the ρs indicating the size of the side lobe compared to the main lobe and the accurate detection rate of the OS CFAR. In the case of ρs, it was confirmed that with single targets, Adaptive Mirror Padding was improved by about 3 times and Phase Correct Padding was improved by about 6 times compared to the existing algorithm. The results of the OS CFAR were divided into single targets and multiple targets to confirm the performance. In single targets, Adaptive Mirror Padding improved by about 10% and Phase Correct Padding by about 20% compared to the existing algorithm. In multiple targets, Phase Correct Padding improved by about 20% compared to the existing algorithm. The proposed algorithm was verified through the MATLAB Tool and the actual FMCW radar. As the results were similar in the two experimental environments, it was verified that the algorithm works in real radar as well.

22.4 A 250GHz Autodyne FMCW Radar in 55nm BiCMOS with Micrometer Range Resolution

2021 ◽  
Author(s):  
S. M. Hossein Naghavi ◽  
Saghar Seyedabbaszadehesfahlani ◽  
Farzad Khoeini ◽  
Andreia Cathelin ◽  
Ehsan Afshari
Keyword(s):  
Range Resolution ◽  
Fmcw Radar

100 GHz FMCW Radar Module Based on Broadband Schottky-diode Transceiver

Frequenz ◽  
2018 ◽  
Vol 72 (5-6) ◽  
pp. 267-276 ◽  
Author(s):  
Shu Jiang ◽  
Jinping Xu ◽  
Jiangling Dou ◽  
Wenbo Wang
Keyword(s):  
Schottky Diode ◽  
Continuous Wave ◽  
Design Method ◽  
Integrated Design ◽  
Band Frequency ◽  
Range Resolution ◽  
Fmcw Radar ◽  
Critical Components ◽  
Rf Performance ◽  
Compensation Approach

AbstractWe report on a W-band frequency-modulated continuous-wave (FMCW) radar module with fractional bandwidth over 10 %. To improve flatness over large operation bandwidth, the radar module is developed with focus on the 90–101 GHz modular transceiver, for which accurate modeling of Schottky diode in combination with an integrated design method are proposed in this work. Moreover, the nonlinearity compensation approach is introduced to further optimize the range resolution. To verify the design method and RF performance of the radar module, both measurements of critical components and ISAR imaging experiments are performed. The results demonstrate that high resolution in range and azimuth dimensions can be achieved based on the radar module, of which the receiving gain flatness and transmitting power flatness are better than ±1.3 dB and ±0.7 dB over 90~101 GHz, respectively.

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