Real-time block floating point frequency domain four-route pulse compressor and pulse compression method thereof

Abstract

The invention discloses a real-time block floating point frequency domain four-route pulse compressor and a pulse compression method thereof, and the problems that the existing pulse compression technology is long in time delay and poor in reusability are solved. The pulse compressor comprises an input data conversion module (1), a block floating point FFT module (2), a four-route matching multiplying module (3), a block floating point IFFT module (4) and an output data conversion module (5). A route of input serial data are converted by the first module (1) to four-route parallel block floating point data which are supplied to the second module (2) for FFT, after FFT, the data are supplied to the third module (3) for four-route matching multiplication, multiplication results are subjected to IFFT by the fourth module (4), and after IFFT, the data are converted by the fifth module (5) to be a route of serial fixed-point data or a route of serial floating-point data which are used as output results of pulse compression. The real-time block floating point frequency domain four-route pulse compressor has the advantages of being short in time delay and high in real-time ability, and can be used for real-time processing of radar signals.

Description

technical field [0001] The invention belongs to the technical field of digital signal processing, and further relates to a pulse compressor in the radar signal processing technology, which is used to reduce the time delay of pulse compression, thereby improving the real-time performance of radar signal processing. Background technique [0002] Pulse compression technology is an important technology in the field of modern radar signal processing, which is used to solve the contradiction between radar pulse peak power and distance resolution, and has high anti-interference ability. With the rapid development of digital technology and large-scale integrated circuit technology, the advantages of digital pulse compression technology, such as stable performance, strong anti-interference ability, flexible control mode and smaller hardware system, have gradually replaced the early analog pulse compression technology and become The development trend of modern radar pulse compression ...

AI Technical Summary

Problems solved by technology

If the fixed-point data format is used, the dynamic range of the data is limited, which cannot meet the requirements in many cases; if the floating-point data format is used, although the requirements for the dynamic range of the data can be met, the area of ​​the pulse compressor will increase sharply, resulting in cost huge

[0009] 2) time extension

The time extension of pipeline pulse compression limits the speed of pulse compression and the real-time performance of pulse compression

[0010] 3) Poor reusability

Since the input and output data formats of existing frequency-domain pulse compressors are generally fixed formats, such as a separate fixed-point data format or a separate floating-point data format, it is not easy to multiplex and transplant pulse compressors

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