Adaptive Detection with Subspace Constrained Rank one Interference of the First Order

Kun ZOU; Lei LAI; Yanbo LUO; Wei LI

doi:10.11999/JEIT200259

Volume 43 Issue 6

Jun. 2021

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Kun ZOU, Lei LAI, Yanbo LUO, Wei LI. Adaptive Detection with Subspace Constrained Rank one Interference of the First Order[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1659-1666. doi: 10.11999/JEIT200259

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Kun ZOU, Lei LAI, Yanbo LUO, Wei LI. Adaptive Detection with Subspace Constrained Rank one Interference of the First Order[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1659-1666. doi: 10.11999/JEIT200259

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Adaptive Detection with Subspace Constrained Rank one Interference of the First Order

doi: 10.11999/JEIT200259 cstr: 32379.14.JEIT200259

School of Information and Navigation, Air Force Engineering University, Xi’an 710077, China

Funds: The National Natural Science Foundation of China (61571456, 61603409, 61871396), The Postdoctoral Science Foundation of China (2017M623352, 2018T111148), The Shaanxi Province Natural Science Foundation (2020JM-343, 2020JM-352)

Received Date: 2020-04-10
Rev Recd Date: 2020-11-10

Available Online: 2020-11-11

Publish Date: 2021-06-18

Abstract

Abstract

In the complex electromagnetic environment, the radar returns may contain some interference components, which leads to the detection performance degradation. In this paper, considering the adaptive detection problem, where the cell under test and a portion of the reference data are contaminated by the rank one interference of the firs order, constrained in a known subspace. Base on the 2-Step Generalized Likelihood Ratio Test (2SGLRT) criterion, a Subspace Constrained (SC) 2SGLRT(SC-2SGLRT) detector is proposed. Furthermore, using a Modified 2SGLRT (M2SGLRT), a SC-M2SGLRT detector is proposed, which has a better detection performance than 2SGLRT. Finally, using the so called 3SGLRT criterion, a SC-3SGLRT detector is proposed, whose detection performance is similar to the 2SGLRT, but with very small computation load. The computer simulation results show that, to make full use of all reference data and a prior information of the interference is helpful to improve the detection performance.
- Adaptive detection,
- Rank one interference of the first order,
- Subspace constrained interference,
- Generalized Likelihood Ratio Test (GLRT),
- Test criterion

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References(24)

References

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