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In this paper, the characteristics of two different uniformly spaced circular arrays are analyzed, including the beam width, the sidelobe peak level, the resolution and the Cramer-Rao bound(CRB) of the array. Firstly, according to the structure of the dual circular array, the formula of array pattern, the formula of resolution and the formula of CRB are deduced. Secondly, the effects of the elements...
This paper proposed a new concept of optical counterpart of radar system. Due to the difference between wavelength of microwave and light, we can build an optical counterpart of a radar system in reduced dimensions with optical components and light in place of microwave. The radar system is equivalent to its optical counterpart in physical principle. As for a C-band radar system, the wavelength is...
A new synthesis approach for sparse planar array element positions featuring a minimum sidelobe level is presented. The approach is based on the Modified real Genetic Algorithm (MGA), it can search a smaller space of solution to find an optimal solution, and the freedom of the elements can be used more effectively than the existing methods. Finally, the numerical simulations are presented to assess...
In this paper, we present a novel scalable logo recognition system which can recognize a large number of logo categories locally on mobile devices. The system is unsupervised without any supervised training procedure, and very time efficient at low memory cost. It is also robust against challenging conditions such as noise addition, different image scale, rotation, etc. To achieve this goal, we propose...
The purpose of this paper is to embed information on codes when using search-order coding (SOC) to compress index table. The proposed method reassigned the shorter indicators to the indices that can be transformed to SOC codes and those that can not be transformed are assigned by the other indicators. If the cover image is a smooth image, the proposed method can significantly reduce the size of compression...
The human body has seven chakras and the application of seven essential oil blends to beauty aromatherapy massage in preventive health care has become very popular in Taiwan. However, there is no study confirming the physiological role of diastolic pressure of each chakras essential oil. Hence, the aim of this paper is to analyze the effect of the heart chakras essential oil blends for the subjects...
The system of reliability in the process of shipbuilding shows the characteristics of dynamics, randomness and uncertainty, and the system is a typical non-linear system. Due to the limitations of traditional mathematical methods solving the non-linear system, this paper applies the wavelet neural network model for reliability evaluation based on the index system and weight algorithm. Results prove...
Coordination refers to agents that coordinate their own behavior in an environment of finite resources to conform to individual benefits or group goals. Dependent agents use effective information connections for coordinating and adjusting resource distribution, thereby reaching agreements between dependent agents. However, during the process of coordination, an effective method of assessment is necessary...
According to the climate data of Fujian Province, by using of mathematical statistics to establish geographical projection model between the minimum temperature and longitude, latitude, altitude (including litchi and longan that happened once in 20 years of minimum temperature, the reference of once in 10 years, banana happened once in 5 years of minimum temperature), the chilling (freezing) injury...
Aiming at grid nets under the environment of mass, heterogeneous information task, distribution and dynamic characteristics, this paper discusses the principles to be followed firstly, then creates the operational missions information quality evaluation index system and the utility measure mode. The results can provide an authentication method for sharing and using the operational mission information...
In order to measure and evaluate the uncertain factors impacting on the due date of product, the impact factors of the completion date of product on shop floor is intensive investigated firstly. The data of uncertain factors which affected the completion date of products are sorted out, the decision system was made of impact factors that correlative with the completion date of product, and was analyzed...
Customer is one of the most important resources of an enterprise. Customer value analysis is the basis of customer relationship management and customer classification is an important item of customer value analysis. Aiming at the characteristics of customer in the mobile telecommunication industry, the thesis designed the BP neural network model, and presented the doable evaluating programs using...
This paper deal with the problem of direction-of-arrival (DOA) estimation with a polarization sensitive array. The proposed DOA estimation method is based on a sparse representation of polarization sensor measurements with an overcomplete basis composed of samples from the polarization sensitive array manifold. It enforces sparsity by ??1-norm to obtain a sharp amplitude estimate of the sparse solution...
This paper proposes a novel data embedding method for embedding secrets into VQ indices by using the Chinese Remainder Theorem (CRT). In the experimental results, the hiding capacity is flexible which corresponds to the pre-defined prime parameters. In addition, a reversible mechanism is imported into the scheme so the original VQ indices can be restored after extracting secrets retrieval.
In this paper, we proposed a dynamic ordered subcarrier selection algorithm (DOSSA) for OFDM based video transmission system. The proposed scheme is shown to achieve lower bit error rate (BER) than the previously proposed OSSA by first selecting a fraction of the subcarriers with highest channel gain. The content information is then exploited in order to extend the OSSA to achieve unequal error protection...
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