A high dynamic pulse shaping signal simulation method and device

Abstract

The invention discloses a highly dynamic pulse forming signal simulation method and apparatus. The apparatus comprises: a parameter calculation module and a forming filter module; the parameter calculation module comprises an upper computer, an NCO accumulator, a memory and a parameter calculation module; the forming filter module comprises a plurality of parallel FIR filter modules and a weighted summation module; each FIR filter module comprises an addressing control sub-module, a parameter control sub-module, a filter coefficient ROM and a basic FIR filter. The highly dynamic pulse forming signal simulation device disclosed by the invention is realized by a polynomial interpolation filter, which can not only realize variable ratio sampling rate conversion without the concept of intermediate sampling rate. Moreover, the polynomial interpolation filter adopts a Farrow structure, which greatly reduces the complexity of implementation. Therefore, the polynomial interpolation filter can meet the basic requirements of highly dynamic pulse forming signal simulation.

Description

technical field [0001] The invention belongs to the fields of aerospace measurement and control communication, satellite navigation and positioning, and satellite communication, and in particular relates to a high dynamic pulse shaping signal simulation method and device. Background technique [0002] As a basic technology of digital communication, pulse shaping filtering can effectively improve spectrum utilization and reduce intersymbol interference, and is widely used in various communication fields, including aerospace measurement and control communication and satellite communication. Whether it is in the field of aerospace measurement and control communication or satellite communication, they all work in a highly dynamic environment. In order to test and verify the system's ability to handle the Doppler effect, a signal simulator is required to simulate the high dynamic characteristics of the pulse-shaped signal. [0003] The pulse shaping filter is a conventional pulse...

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Problems solved by technology

[0006] In view of this, the present invention provides a high dynamic pulse shaping signal simulation method and device to solve the problem that the filter performance is usually affected by the approximation degree of the polynomial to the filter impulse response when the polynomial-based interpolation filter is simulated, better performance in the frequency domain

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