Title :
Design of FMCW millimeter-wave radar for helicopter assisted landing
Author :
Rangwala, Mustafa ; Lee, Juseop ; Sarabandi, Kamal
Author_Institution :
Univ. of Michigan, Ann Arbor
Abstract :
This paper discusses the design and construction of a compact, ultrafast, monostatic frequency modulated continuous wave (FMCW) millimeter-wave radar, operating at 94.75 GHz, intended to be used as a helicopter assisted landing sensor. A high speed direct digital synthesizer is used to generate the baseband FM signal. Custom transmitter/receiver baseband boards are designed to up/down-convert the frequency modulated (FM) signal to an appropriate IF before it can be connected to the W-band RF frontend. A high-gain lens horn antenna is used in the RF frontend, in conjunction with other waveguide-based W-band components. A Xilinx FPGA is used in the backend data processing, preferred over conventional DSPs because of its speed. The whole system is packaged in an aluminum casing, with dimensions of 9´ x 11´ x 11´ and weighing under 20 lbs.
Keywords :
CW radar; FM radar; airborne radar; field programmable gate arrays; helicopters; remote sensing by radar; FMCW millimeter-wave radar; W-band RF frontend; Xilinx FPGA; backend data processing; helicopter assisted landing sensor; high speed direct digital synthesizer; high-gain lens horn antenna; monostatic frequency modulated continuous wave radar; transmitter-receiver baseband boards; waveguide-based W-band component; Baseband; Frequency modulation; Helicopters; Millimeter wave radar; Modular construction; Radio frequency; Signal design; Signal generators; Synthesizers; Transmitters; DDS; FMCW; FPGA; W-band; helcopter assisted landing; millimeter-wave; monostatic; radar; waveguide;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4423772
