INTER-REVIEW DEVICE FOR MAPPING ASYNCHRONOUS IMPULSE INTERFERENCE FOR PULSE-DOPPLER RADAR STATIONS AND METHOD FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC G01S7/292 G01S13/89 

FIELD: radars.

SUBSTANCE: claimed group of inventions relates to the field of radar and can be used to protect against asynchronous impulse interference (AII), in order to improve the characteristics of detection a useful echo signal. In the claimed method, the number of spatial clusters for which the calculation and storage is calculated and stored: the sign of the presence/absence of the AII, the inter-review accumulated signs of the AII detection, the number of the review cycle in which the sum of the AII detection signs was changed, the average number of periods containing the AII, the averaged value of the amplitude excess useful signal over the pre-calculated value of the intrinsic and external noises, the average value of the excess of the AII amplitude over the useful signal. Next, the signal modulus is determined before and after matched filtering (MF) both with and without AII protection. Based on the difference between the received signal modules, information about the AII is formed before and after the MF, after which the information about the AII is selected: range resolution elements with signs of the presence of an AII, the number of periods containing the AII in the range resolution element; the average value of the excess of the amplitude of the useful signal over the pre-calculated value of the intrinsic and external noise; the average value of the excess of the AII amplitude over the useful signal. The signs of the presence of AIIs in the clusters are accumulated and the numbers of the review cycles in the clusters are changed, which correspond to when the last changes were made. The values of the accumulated AII signs are checked and lie within the specified interval. If the maximum value is exceeded, the latter is recorded. If the value is below the minimum possible, the sign of the absence of AIIs in the cluster is selected. It then checks for information in clusters that have not been modified in the current review cycle, for example, due to an asynchronous review. The cycle number changes to the current one, and the sum of the signs of the presence of an AII decreases by one. Signs of AII presence in azimuth directions are determined. After that, the signs of detecting AIIs are expanded, and according to information about AIIs in clusters, their classification is carried out. The result at the output of the considered invention will be: signs of AII detection in clusters; extended signs of AII detection in clusters; classified information about AIIs in clusters; signs of the presence of AIIs in azimuth directions.

EFFECT: invention ensures the possibility of mapping AII in spatial extended clusters in range, azimuth and work angle both for synchronous and asynchronous radar survey and classification of AII with indifference to the speed and radar survey method during inter-review mapping of AII.

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