Frequency Diverse Array Radars

Antonik, Paul; Wicks, Michael C.; Griffiths, Hugh; Baker, C.J.

doi:10.1109/radar.2006.1631800

Cited by 601 publications

(285 citation statements)

References 2 publications

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“…As known, time or frequency offsetting can affect the radiation pattern of a phased array [13,14]. However, the time offsets introduced in Eq.…”

Section: Descriptionmentioning

confidence: 99%

Simple Calibration Technique for Phased Array Radar Systems

Babur¹,

Manokhin²,

Monastyrev³

et al. 2017

PIER M

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Abstract-This paper presents a novel effective calibration technique applicable to phased array radars. The real embedded patterns of the array elements are measured independently in operating mode, taking antenna coupling and other parasitic effects into account. The proposed calibration technique requires minimal modification of the radar hardware. A set of angular-dependent error coefficients, which are compensated during the calibration process, are extracted for one received pulse for one/each angular direction of interest. The performance and effectiveness of the here-proposed calibration technique are assessed by means of modeling and experimental verification.

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“…As known, time or frequency offsetting can affect the radiation pattern of a phased array [13,14]. However, the time offsets introduced in Eq.…”

Section: Descriptionmentioning

confidence: 99%

Simple Calibration Technique for Phased Array Radar Systems

Babur¹,

Manokhin²,

Monastyrev³

et al. 2017

PIER M

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“…On the other hand, frequency diverse array (FDA) has been widely investigated in radar field [10]. Recently, FDA has been a very attractive array for DM secure wireless communications [11][12][13][14][15] compared to that of the phased array antenna.…”

Section: Introductionmentioning

confidence: 99%

“…The main difference between FDA and phased-array is the small frequency increment used across the array elements. This frequency increment makes the array beampattern to change as a function of the range, angle and time [10] and [16]. In practical array systems, we are solely motivated by the advantages of both FDA and Butler matrix, in addition to DM characteristics from a more practical point of view.…”

Section: Introductionmentioning

confidence: 99%

Frequency Diverse Array Using Butler Matrix for Secure Wireless Communications.

Nusenu¹,

Chen²,

Wang³

et al. 2018

PIER M

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Abstract-An antenna array system configured to offer directional dependent modulation has the capability to prevent eavesdroppers' attacks, thereby enhancing the security level of data transmission. In this paper, we propose artificial-noise-aided directional modulation transmitter utilizing a 4 × 4 Butler matrix with a four-element 2-D (i.e., range and angle) frequency diverse array (FDA) antenna to achieve secure transmissions, which outperforms the 1-D (i.e., angle) phased array scheme. The proposed scheme utilizes FDA Butler matrix excited by information data and injected artificial noise interference which radiates along all directions except the main information data direction. Thus, the radiation pattern during a particular transmission period will be range-angle dependent. The proposed scheme is evaluated by using constellation points in IQ space, bit error probability (BER), and secrecy capacity. Simulation results demonstrate that: 1) our scheme scrambles the constellation points along undesired direction(s) in both amplitude and phase, while preserving a clear constellation points along the pre-specified direction(s); 2) the scheme achieves better BER and secrecy capacity than that of the phased array based directional modulation scheme and other existing scheme; 3) the scheme significantly improves security performance especially in the range dimension.

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“…Different from phased array, a small frequency increment, as compared to the carrier frequency, is applied between the FDA elements [7][8][9][10][11]. This small frequency increment results in a range-angle-dependent beam pattern [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Cognitive MIMO Frequency Diverse Array Radar with High LPI Performance

Huang

Gao

et al. 2016

International Journal of Antennas and Propagation

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Frequency diverse array (FDA) has its unique advantage in realizing low probability of intercept (LPI) technology for its dependent beam pattern. In this paper, we proposed a cognitive radar based on the frequency diverse array multiple-input multiple-output (MIMO). To implement LPI of FDA MIMO transmit signals, a scheme for array weighting design is proposed, which is to minimize the energy of the target location and maximize the energy of the receiver. This is based on the range dependent characteristics of the frequency diverse array transmit beam pattern. To realize the objective problem, the algorithm is proposed as follows: the second-order nonconvex optimization problem is converted into a convex problem and solved by the bisection method and convex optimization. To get the information of target, the FDA MIMO radar is proposed to estimate the target parameters. Simulation results show that the proposed approach is effective in decreasing the detection probability of radar with lossless detection performance of the receive signal.

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Frequency Diverse Array Radars

Cited by 601 publications

References 2 publications

Simple Calibration Technique for Phased Array Radar Systems

Simple Calibration Technique for Phased Array Radar Systems

Frequency Diverse Array Using Butler Matrix for Secure Wireless Communications.

Cognitive MIMO Frequency Diverse Array Radar with High LPI Performance

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