| 摘要 |
FIELD: the invention refers to the field of radiolocation particularly to initial processing of echo-signals of a radar station and may be used at detection of useful signals against the background noise. ^ SUBSTANCE: the technical result is achieved in using the analog-discrete mode of processing radiolocation impulse signals with unknown short-term position incoming in the receiving tract from a phase detector on a video frequency, by way of coherent processing, including initial analog filtration, analog-digital transformation and discrete filtration with following incoherent processing and comparison with prescribed detection threshold, form an analog-discrete filter with common transfer characteristics K(omega) and with its aid the indicated coherent processing of signals is carried out. At that the transfer characteristics K(omega) of the formed analog-discrete filter is defined according to the formula where omega- a frequency; ▵t- a short-term digitization step; S*(omega)- fully conjugated spectrum of a useful signal; N(omega) - spectral density of noise power. ^ EFFECT: reduces equipment costs in processing radiolocation signals at minimum meaning of arising losses in relation signal-cost. ^ 4 dwg |
