Prospects of FMCW-based frequency diverse array radar

2019-11-01
Cetiner, Ramazan
Cetintepe, Cagri
Demir, Şimşek
Hizal, Altunkan
The linear frequency modulated (LFM) frequency modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is investigated in detail. The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as a pulsed FMCW/phased array (PA) in the receiving mode. The issues such as low signal-to-noise ratio (SNR) of FDA, the time-angle scanning and time-range ambiguities are studied. It is shown that the local instantaneous frequency bandwidth is much smaller than the radio frequency (RF) deviation of LFM. Positive and negative slope TX/RF locations offer frequency diversity. Time domain and frequency domain signal processings are described. A Ku band direct digital synthesis-based FMCW/FDA radar example based on the cumulative detection scheme is given and compared with an equivalent FMCW/PA radar.

Citation Formats
R. Cetiner, C. Cetintepe, Ş. Demir, and A. Hizal, “Prospects of FMCW-based frequency diverse array radar,” JOURNAL OF ENGINEERING-JOE, vol. 2019, no. 21, pp. 7299–7303, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37634.