Assessing the detection zones of radar stations with the additional use of radiation from external sources

Рубан, Ігор; Khudov, Hennadii; Lishchenko, Vitaliy; Pukhovyi, Oleksandr; Popov, Serhii; Kolos, Ruslan; Kravets, Taras; Shamrai, Nazar; Solomonenko, Yuriy; Yuzova, Iryna

doi:10.15587/1729-4061.2020.216118

Cited by 15 publications

(21 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is seen from expression ( 16) that the degree of suppression of the direct penetrating signal in the main channel by means of a single-channel compensator is determined by the degree of correlation of the processes operating in the main and auxiliary channels. When 1 ρ →  , power of the penetrating signal at the output of the compensator is 2 0 15). In real conditions, the complex correlation coefficient of the processes at the output of two receiving devices is always less than one 1. ρ <  This is explained, firstly, by the presence of uncorrelated intrinsic thermal noise of the receiving channels and, secondly, by non-identity of amplitude-frequency characteristics (AFC).…”

Section: Description Of the Direct Penetrating Signal Compensator In The Diverted Reception Channelmentioning

confidence: 99%

“…The problem of suppressing powerful when combining single-position and diverted receptions [14] penetrating signals in the diverted reception channel was not considered in [14]. Detection zones of surveillance radars were assessed in [15] with additional use of radiation from external sources. The studies were conducted under the assumption that direct signals from external radiation sources do not affect the main channel of the receiving radar (single-position reception channel).…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The studies were conducted under the assumption that direct signals from external radiation sources do not affect the main channel of the receiving radar (single-position reception channel). The problem of suppressing powerful penetrating signals in the diverted reception channel was not considered in [15] as well.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Thus, in known systems with additional use of radiation from external sources in surveillance radars [11][12][13][14][15][16][17][18][19], suppression of a powerful penetrating signal is either not considered at all [11,12,14,15] or known methods are used [16][17][18][19] which have abovementioned disadvantages.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…The coefficient of suppression of the direct penetration signal is defined as a ratio of the process power (penetration signal) at the input of the autocompensator to the process power at its output. Taking into account (15), the coefficient of suppression is described by expression ( 16):…”

Section: Description Of the Direct Penetrating Signal Compensator In The Diverted Reception Channelmentioning

confidence: 99%

See 4 more Smart Citations

Development of a direct penetrating signal compensator in a distributed reception channel of a surveillance radar

Khudov

Yarosh

Droban

et al. 2021

EEJET

Self Cite

View full text Add to dashboard Cite

General structure of a compensator of a direct penetrating signal in the diversed reception channel was developed. It is advisable to use the antenna and the receiver of the auxiliary diverted reception channel as an auxiliary antenna and an auxiliary channel. To be able to suppress the penetrating signal in the band of the receiving device of the surveillance radar, distance between the antennas should be up to 6 m. In general, the compensator of the penetrating signals should contain an adder in which the signals received by the main channel are added with the signals received by the auxiliary channel and sent through the amplifier with a corresponding complex transmission coefficient. The direct penetration signal compensator features the obligatory condition of adjusting the value of the complex transmission coefficient of the auxiliary channel signal amplifier. The direct penetration signal compensator is digital and uses the direct method of forming weighting coefficients without the use of feedback. To reduce the time of formation of weighting coefficients when using direct methods of calculation of the correlation matrix, the technology of parallel computational processes was used. The quality of operation of the direct penetrating signal suppression system in the diverted reception channel was evaluated. It was established that without the use of suppression of direct penetrating signals, their powerful response at the output of the matched filter mask weak echo signals. When using a direct penetrating signal in the main channel of the compensator, its response at the output of the matched filter is significantly reduced. This makes it possible to observe weak echoes against the background of a strong penetrating signal. The use of the developed direct penetrating signal compensator provides suppression of the direct penetrating signal from 57 dB to 70 dB

show abstract

Section: Description Of the Direct Penetrating Signal Compensator In The Diverted Reception Channelmentioning

confidence: 99%