Optimizing the combustion efficiency of a thermal power generating unit (TPGU) is highly challenging and critical task in energy industry. We develop new data-driven AI system, namely DeepThermal, to optimize control strategy for TPGUs. At its core, model-based offline reinforcement learning (RL) framework, called MORE, which leverages historical operational data TGPU solve complex constrained Markov decision process problem via purely training. In we first learn simulator from dataset. The...

An Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT)-based method is presented to estimate the gain-phase errors both transmit and receive arrays in bistatic multiple-input-multiple-output (MIMO) radar. Unlike recent ESPRIT-like methods, directions unknown targets uncalibrated array steering vectors are first estimated with ESPRIT-based algorithm, calculated subsequently. Compared existing proposed much more computationally efficient has better performance....

In this paper, a novel range compression algorithm for enhancing resolutions of passive Global Navigation Satellite System-based Synthetic Aperture Radar (GNSS-SAR) is proposed. the proposed algorithm, within each azimuth bin, firstly carried out by correlating reflected GNSS intermediate frequency (IF) signal with synchronized direct base-band in domain. Thereafter, spectrum equalization applied to compressed results suppressing side lobes obtain final range-compressed signal. Both...

This study proposes a new imaging algorithm for passive Global Navigation Satellite System‐based synthetic aperture radar to improve range resolution. In the proposed algorithm, reduce compressed pulse mainlobe ambiguity caused by pseudo‐random noise code frequency, second‐order differentiation is carried out square of signal with respect delay lag. Because carrier phase value distorted in squaring procedure, thereafter, recovery processing applied each identified preserving azimuth...

In recent decades, passive global navigation satellite system-based synthetic aperture radar (GNSS–SAR) has emerged as a remote-sensing tool. However, the distance between GNSS satellites and Earth's surface results in weak signal strength, which negatively affects object detection. To address this issue, article proposes an imaging method based on iterative range compression scheme. proposed method, is first performed through correlation of reflected with local direct replica. Meanwhile,...

Patterned sapphire substrates (PSS) have been widely used to enhance the light output power of emitting diodes (LEDs).The morphology and shape PSS a great influence on performance LEDs. In this work, commercial is reprocessed utilizing selective-area wet etching approach, in which SiO2 mask fabricated through partial exposure lithography instead conventional overlay lithography. By precisely controlling time, process can be controlled take place only top PSS. Various surface including...

The speed of sound in n-octane and isooctane (2,2,4-trimethylpentane) was measured by the Brillouin light scattering (BLS) method. examined regions for are T = (297–580) K along five isobaric lines at p 0.1, 4.0, 7.0, 10.0, 12.0 MPa liquid (573–673) ten with (3.0–10.0) supercritical fluid. (294–525) 3.0, 6.0, (543–630) six relative expanded uncertainty is estimated less than 1.3%. Polynomial representations were fitted to experimental results, respectively. AADs 0.27% 0.19% isooctane....

Highly reliable embedded systems have been widely applied in the fields of aerospace, nuclear power, high-speed rail, etc., which are related to security and economic development. The reliability power supply directly influences system, has research focus numerous electronic information energy studies. degradation modules occupies a dominant position among key factors affecting reliability. How dynamically determine state forecast remaining useful life working is critical. Therefore, an...

In the field of cognitive electronic warfare, automatic feature learning and recognition radar signal is an important technology to ensure intelligence reconnaissance. This paper analyses a novel structure CNN-LSTM proposes algorithm for signals. The main contributions are as follows: Firstly, transformed into time-frequency image, principal component information image extracted by proposed processing method (clipping-marginal frequency interception-binarization-remodeling). Then, designed...

GNSS based SAR system is a passive radar imaging system. Using the reflected signals, it has been demonstrated that various objects can be identified in GNSS-SAR images. However, compared with conventional systems, strength of signals significantly lower. How far detected by question. In this paper, we derived theoretical range coverage for object recognition using object-background scattering contrast, given false alarm and detection probabilities. GPS software receiver at L1 frequency...

Weak reflected signal is one of the main problems in a recent developing remote sensing tool-passive GNSS-based radar (GNSS radar). To address this issue, an enhanced GNSS imaging scheme on basis coherently integrating multiple satellites proposed. In proposed scheme, to avoid direct interference at surveillance antenna, that used as transmission opportunity are backscattering geometry model. accumulate echo magnitudes scene center targeted region illuminated by selected satellites, after...

A new tool for remote sensing GNSS-SAR is developing recently. However, due to the limitation of narrow signal band GNSS signals, images generated by are much noisy and with low azimuth resolution, particularly when reflected signals weak. Due issue, a algorithm proposed target detection based on Range- Doppler in this paper. Firstly, according analysis average SNR (signal-to-noise ratio) received signal, optimal threshold range correlation duration derived detecting compressed signal....

The Buzhaoba open-pit mine is an important lignite production base in Yunnan Province, China. As mining activities have continued to progress, varying degrees of deformation occurred different areas the mine, threatening normal coal and safety. To comprehensively investigate characteristics surface its influencing factors at this study employed following methods: first, SBAS-InSAR technique was used process 86 Sentinel-1A ascending descending orbit remote sensing images from 2020 2023,...

The RBF-ARX model has been used intensively in modeling and control of nonlinear systems, which the coefficients NARX are approximated with RBF networks. In this paper, motivated by fact that state feedback policy variable-gain can support more freedom for design RMPCs, we propose an model-based RMPC synthesis method. First, a polytopic space construction method is designed, variation rate information parameters also utilized to improve accuracy system prediction. And then, robust predictive...

Inspired by the fabrication of transition metal dichalcogenide nanoribbons with well-defined atomically precise edges, we study stability, electronic structures, and magnetism MTe2 (M = Cr, V, Fe) monolayer nanoribbons. The calculations indicate that all three types monolayers can form structurally stable zigzag (ZNR) armchair (ANR) nanoribbons, which significantly alter properties films, as shown in Table I. For CrTe2-ZNR transitions from a non-magnetic semiconductor to ferrimagnetic metal....