Wideband Digital Array Receiver Technology

With the development of radar countermeasure technology, modern radar is in condition of austere electromagnetic countermeasure. In this condition, modern radar should have the capability of high accuracy, multifunctional and anti-jamming. One method to improve these properties is to use array radar. With the maturity of modern digital theory and VLSI technology, the wideband digital array radar is possible.In this dissertation, based on the reaearch of a wideband digital array radar T/R component, we discuss the theory of the digital array radar and the wideband digital array receiver, analysis the principle of digital down conversion, design a digital down conversion program with multi-phase algorithm based on CORDIC structure, Realize the fiber-optic links between the digital receiver board and DBF board, implement the hardware and software design on board based on ADC & FPGA, debug hardware and software design to verify the viability and stability of the receiver's program.The primary work in this dissertation:1.Design and implement RF bandpass sampling on ADC.2.Design and implement DDC with multi-phase algorithm based on CORDIC structure.3.Design and implement digital delay, digital phase shift, digital frequency shift on high-speed data rate.4.Design and implement data PingPang storage on high-speed data rate and the fiber-optic links between the digital receiver board and DBF board.5.Complete printed circuit board design and debug the design of this digital receiver on this board.