Cooperative jamming effectiveness evaluation is a key component in completing the cooperative OODA loop. For problem of evaluating to group network radar by formation aircraft, method based on Improved Particle Swarm Optimization–Extreme Learning Machine (IPSO-ELM) proposed. First, working parameters and information fusion rules, function established. On this basis, decision schemes their corresponding values are solved at different locations target space, results detected as outliers using...

Abstract The Airborne Warning and Control System (AWACS) are pivotal assets in aerial operations, necessitating specialised protection measures, serving as prime targets for enemy anti‐radiation missiles (ARMs). This paper explores approaches to enhance the battlefield survivability of frequency diverse array AWACS (FDA‐AWACS) by incorporating airborne radar technology onto platform. study commences analysing typical operational methods missiles. Following this, a deception model is...

Innovating the management style of traditional doors and windows on college campuses will not only spur a wave campus information creation, but also greatly increase refinement intelligence. Based NB-IoT Internet Things technology, this paper proposes set cloud-management-terminal integrated intelligent system. On platform side, range modules are built, with each module capable performing different activities to fulfill everyday needs its users. hardware front-end back-end split architecture...

With the continuous development of modern optical systems, demand for full spatial frequency errors components in system is increasing. Although computer-controlled sub-aperture polishing technology can quickly correct low-frequency errors, this significantly worsens mid-frequency on surface component, which greatly inhibits improvement performance. Therefore, we conducted in-depth research non-stationary effect removal function caused by fluctuation magnetorheological and their influence...

Beamforming plays an important role in the array radar anti-interference. However, interference targets with fast speed may move out of narrow null area beampattern. A broadening method robust adaptive beamforming for frequency diverse (FDA)-multiple-input and multiple-output (MIMO) systems is proposed this paper. The projection preprocessing windowing functions are applied to obtain stable beampatterns. Then, a novel based on covariance matrix reconstruction realized by setting artificial...

The paper proposes a novel adaptive radio-over-fiber (RoF) system for next-generation cloud radio access network (C-RAN), aiming to optimize the operation cost in terms of power consumption while maintaining required data rate. By jointly considering nonlinear distortion from Mach-Zehnder modulator (MZM) and high amplifier (HPA) due peak-to-average-power ratio (PAPR) electronic domain, we first provide 2×2 multiple-input mulitple-output orthogonal frequency division multiplexing (MIMO-OFDM)...

A compact slot multiple-input multiple-output Antenna (CSMA) for smartphones with metal housing is proposed in this paper. The antenna has a radiator shared between two input ports and T-shaped defect-ground (DGS) decoupling. function selecting the best dimensions of DGS optimum decoupling derived using transmission theory. CSMA designed simulation to operate 2.4-GHz wireless-area-network (WLAN) system then fabricated measurement. Measured results show that an impedance bandwidth (IMBW)...

With advances in radar localisation, especially the emergence and development of passive there is an urgent demand for countermeasure technology. To counteract direction-of-arrival (DOA) location, this article studies DOA location deception effect a frequency diverse array (FDA) on interferometer. By analysing phase distribution model uniform linear FDA (ULFDA) signal principle one-dimensional interferometer, it was found that difference produces does not conform to direction-finding law...

Abstract Airborne warning and control systems (AWACS) serve as critical command centres in air combat operations, making them prime targets for strategic attacks. These enemy attacks typically rely on the accurate determination of AWACS positions using different direction‐finding devices. In particular, passive monopulse angle measurement locate by measuring angles signals emitted radiation sources, thus rendering vulnerable to Given criticality airborne radars battle they must function...

Using deep learning methods is a promising approach to improving bark removal efficiency and enhancing the quality of wood products. However, lack publicly available datasets for plate segmentation in processing poses challenges researchers this field. To address issue, benchmark named WPS-dataset proposed study, which consists 4863 images. We designed an image acquisition device assembled it on equipment capture images real industrial settings. evaluated using six typical models. The models...

Accurate detection of wood surface defects plays a pivotal role in enhancing grade sorting precision, maintaining high standards processing quality, and safeguarding forest resources. This paper introduces an efficient precise approach to detecting defects, building upon enhancements the YOLOv8 model, which demonstrates significant performance handling multi-scale small-target commonly found wood. The proposed method incorporates dilation-wise residual (DWR) module trunk deformable large...

Wood plate bark removal processing is critical for ensuring the quality of wood and its products. To address issue lack datasets available application deep learning methods to this field, fill research gap in field equipment, a benchmark segmentation proposed study. Firstly, costumed image acquisition device designed assembled on equipment capture images real industrial settings. After data filtering, enhancement, annotation, recording, partitioning, dataset named WPS-dataset containing 4863...

Jamming resource allocation is an important step in implementing cooperative jamming. Traditional jamming considers only the reduction of enemy radar detection performance but ignores problem mutual interference formation. Therefore, adaptive scheduling strategy based on Improved Sparrow Search Algorithm (ISSA) proposed to improve efficiency and minimize interference. First, target model are established. On this basis, a two-factor objective function network probability degree constructed....

Nowadays, computer controlled optical surfacing (CCOS) is greatly developed in the fabrication of ultra-precision surfaces. As one deterministic CCOS techniques, atmospheric pressure plasma processing (APPP) can achieve efficient removal based on chemical reaction. In this process, temperature rising issue caused by heating great importance for accelerating etching rate, but also increases difficulty control, because tool influence function (TIF) APPP no longer time-invariant. existing...

The range and angle information of the frequency diverse array (FDA) cannot be exclusively determined at output because range-angle coupled transmit beampattern. best decoupling approach is to form a dot-shaped beam-pattern rather than S-shaped beampattern basic FDA. Considering degradation signal-to-interference-plus-noise ratio (SINR) caused by beampattern, we propose beamforming method based on analyzed overlapping subarray-based using logarithmic offset planar FDA logarithmically...

This paper first reports a digital coherent quantum noise stream cipher experiment over 300km fiber without intermediate amplifiers. Results show the system can carry 10.2Tbit/s⸱km data, which is historical high in context.