An efficient single receiver high resolution DOA estimation algorithm for modulated signals

Duarte, Aline Gomes Truppel; Apolinario, J.A.; Santos, J.C.

doi:10.1109/imoc.2015.7369044

Cited by 2 publications

(6 citation statements)

References 5 publications

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“…In the figure, , is a unit pointing vector from the emitter. From the PLL technique introduced in [1] and detailed in our previous work [6], if modulation is not considered, the PLL output is presented as…”

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

“…Algorithm IV [6] presents the FFT Peak Finder Algorithm, where the PLL-based technique was used with MUSIC for the first time; also, the analysis was extended for QPSK signals. Considering that the FFT Peak Finder Algorithm removes the PLL ambiguity of all phases , the input signal correlation matrix can be formed and used to obtain the MUSIC spectrum ( , ), a function that depicts the desired direction, (azimuth) and (zenith), as its highest power peak.…”

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

“…from which angle can be estimated using the second FFT coefficient: The block diagram of the proposed technique is essentially that in [6], shown in Fig. 2.…”

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

“…While the curve fitting algorithm in [6] searched for FFT maximums, the new version, in the following, searches for maximums and minimums. The algorithm calculates and stores all replica of the .…”

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

“…(8). (7) (8) The proposed improved algorithm is more elaborate when compared to the previous version in [6].…”

mentioning

confidence: 99%

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Improved PLL-based MUSIC Algorithm for Single Receiver DF Systems

Duarte

Apolinario

Santos

2017

J. Microw. Optoelectron. Electromagn. Appl.

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Abstract-In this paper we propose an improved version of a single receiver DF system that combines a PLL scheme with the MUSIC algorithm to obtain both azimuthal and zenithal angles. The new approach uses a more efficient algorithm to remove the typical ambiguities of PLL-based schemes. We carry out several experiments to assess the algorithm performance. Among them, we consider complex environments, such as wireless communication channels where the received signal is corrupted by noise and suffers from distortion, interference, and multipath effects. The new scheme is tested for BPSK and QPSK signals under these conditions. The simulated results show superior performance of the proposed PLL algorithm when compared to previous techniques. technique independent of the number of antennas, maintaining low complexity but with a zenithal angle of 90º. These techniques were tested for BPSK signals only. In [6], we described the PLL-based

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Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

“…from which angle can be estimated using the second FFT coefficient: The block diagram of the proposed technique is essentially that in [6], shown in Fig. 2.…”

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

Section: Pll-based Single Receiver Df Systemsmentioning

confidence: 99%

“…(8). (7) (8) The proposed improved algorithm is more elaborate when compared to the previous version in [6].…”

mentioning

confidence: 99%

See 3 more Smart Citations

Improved PLL-based MUSIC Algorithm for Single Receiver DF Systems

Duarte

Apolinario

Santos

2017

J. Microw. Optoelectron. Electromagn. Appl.

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Direct Position Determination with Single Sensor Based on Signal Periodicity

Wang

Gao

et al. 2021

Mathematical Problems in Engineering

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Due to practical limitations on size and cost, aerial vehicles generally cannot equip complicated sensors to form sensor array for target localization. In this paper, we investigate the direct position determination (DPD) of stationary source via single moving sensor. First, we analyze artificial signal structure and construct the DPD model with the frame periodicity of artificial signal. The model incorporates Doppler information extracted from both transformation frames and adjacent samples into target localization. Secondly, we consider the effect of oscillator instability and present an iterative solution for joint estimation of target location and phase noise caused by oscillator imperfection. The proposed technique fully exploits periodic structure of artificial wireless signal, which leads to significant enhancement in localization performance. Both theoretical analysis and simulations are presented to confirm its effectiveness.

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An efficient single receiver high resolution DOA estimation algorithm for modulated signals

Cited by 2 publications

References 5 publications

Improved PLL-based MUSIC Algorithm for Single Receiver DF Systems

Improved PLL-based MUSIC Algorithm for Single Receiver DF Systems

Direct Position Determination with Single Sensor Based on Signal Periodicity

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