With the Visual C++ language and the ADO, MS-chart technology, making use of mathematical representation of planar surface based on variation of DOF, this paper developed specific program module according to the tolerance design of the Radar Array Antenna, and described the direct graphics result.

A new spaceborne radar system was proposed in the middle of the ninety's, which is the constellation composed by several small satellites (it was also called as distributed small satellite radar array).

Element position error,mutual coupling between elements,and the difference in frequency responses of receiver channels influence directly the performance of array radar signal processing.

The research of this dissertation focuses on two aspects: the microstrip array antenna of 24GHz and microstrip array antenna with EBG structures. The main context of this dissertation includes: 1. The situation of automobile collision warning radar (CWR) is introduced, especially pictured the history of array antenna of CWR.

The paper discusses the array signal adaptive spacial processing of phased array radar. Much work is done mainly in two aspects—one is the array calibration and the other is the blind sources separation and blind beamforming.

In recent years,there has been a great progress in the field of array signal processing. As a primary part of the field,there are quite a few new concepts and methods in radar array signal processing. Some of them have been employed in the practical applications, but most of them are still in developing situation,and they may bring us bright future in the field. This lecture diseusses the main parts of the results in these years in the field of radar array signal processing. The lecture is divided into eight...

In recent years,there has been a great progress in the field of array signal processing. As a primary part of the field,there are quite a few new concepts and methods in radar array signal processing. Some of them have been employed in the practical applications, but most of them are still in developing situation,and they may bring us bright future in the field. This lecture diseusses the main parts of the results in these years in the field of radar array signal processing. The lecture is divided into eight parts. Part one is the introduction, it introduces the development history of radar array signal processing. Part two is about the background knowl- edge of the contents,some linear algebraic theories used in the lecture and the mathematical models in array signal are introduced. Part three is about filtering processing techniques of array signals. The Fourier processing techniques and maximum entropy spectral estimation etc. are included in this part. Part four is about adaptive array signal puocessing techniques. The primary principle and algorithms of the field and the development of modern adaptive arrays are discussed. In part five,we discuss the signal subspace processing techrdques of array signals. Some statistical performance of eigenstrueture approaches are discussed in part six. Part seven is about the maximum likelihood estimation (MLE)of direction of arrival(DOA)for array signal. In part eight, some applications of array signal processing in modern radar system are finally scussed.

Some characteristics of acoustic array antennas constructed with different horns aretested. The measured antenna directivity patterns are compared with theoreticalpatterns.The effects of wave length , distance between horns,the number of horns andthe air temperature on directivity patterns are discussed.The measured directivitypattern of a 4×4 array basically agrees with the theoretical curve. The comparison ofdifferent types of horns shows that the piezoelectric ceramic tweeter has the bestconversion efficeincy,...

Some characteristics of acoustic array antennas constructed with different horns aretested. The measured antenna directivity patterns are compared with theoreticalpatterns.The effects of wave length , distance between horns,the number of horns andthe air temperature on directivity patterns are discussed.The measured directivitypattern of a 4×4 array basically agrees with the theoretical curve. The comparison ofdifferent types of horns shows that the piezoelectric ceramic tweeter has the bestconversion efficeincy, which is three times of the common horn′s. The reflecting hornYH 5-4 has a good ratio of performance to price,and is suitable for phased array antennamanufacture.

In this paper,we introduce a design of printed dipole antenna element used in radar array antenna,using computer simulation. The prototype design is derived from the work that Brain Edward and Daniel Rees did. Here,we perform simulation of the antenna element through using Ansoft HFSS,and compare the simulating results with experimental ones.