Design and Implementation of True Random Noise Radar System
- Authors
- Min, Woo-Ki; Kim, Cheol-Hoo; Lukin, Constantin A.; Kim, Jeong-Phill
- Issue Date
- Sep-2009
- Publisher
- 한국전자파학회
- Keywords
- Noise Radar; True Random Signal; Correlation; FFT; Range; Doppler; LPI; Ambiguity
- Citation
- Journal of Electromagnetic Engineering and Science, v.9, no.3, pp 130 - 140
- Pages
- 11
- Journal Title
- Journal of Electromagnetic Engineering and Science
- Volume
- 9
- Number
- 3
- Start Page
- 130
- End Page
- 140
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/33421
- ISSN
- 2234-8409
2234-8395
- Abstract
- The design theory and experimental results of a true random noise radar system are presented in this paper. Target range information can be extracted precisely by correlation processing between the delayed reference and the signal received from a target, and the velocity information by the Doppler processing with successive correlation data. A K-band noise radar system was designed using random FM noise signal, and the characteristics of the fabricated system were examined with laboratory and outdoor experiments. A C-band random FM noise signal was generated by applying a low-frequency white Gaussian noise source to VCO(Voltage Controlled Oscillator), and a K-band Tx noise signal with 100 MHz bandwidth was obtained by using a following frequency multiplier. Two modified waveguide horn arrays were designed and fabricated, and used for the Tx and Rx antennas. The required amount of Tx/Rx isolation was attained by using a coupling cancellation circuit as well as keeping them apart with predetermined spacing. A double down-conversion scheme was used in the Rx and reference channels, respectively, for easy post processing such as correlation and Doppler processing. The implemented noise radar performance was examined with a moving bicycle and a very high-speed target with a velocity of 150 m/s. The results extracted by the Matlab simulation using the logging data were found to be in a reasonable agreement with the expected results.
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