The next move is to deduce the range of a bombing radiating wavelength with the flying bomb ' s temperature being analyzed and to compute the target ' s irradiance and radiated luminance between spectral penetrating strip based on the planck formula for the black body 在此基础上，从分析飞行弹体的爆炸温度出发，推导了弹体爆炸时辐射峰值波长的范围，分析了黑体辐射的普朗克公式，计算出目标在光谱通带内的辐出度和辐射亮度。
And it turns out that the bit error rate of passband equalizer is smaller than that of baseband equalizer , but the convergent stability of baseband equalizer is better than that of passband equalizer . at the same time , baseband equalizer can be implemented in hardware more easily than passband equalizer 通带均衡系统的误码率总是小于基带均衡系统的误码率;但基带均衡器收敛后的稳定性要比通带均衡器好,且基带均衡器的采样频率较低,易于硬件实现。
The simulation and experiments indicate that these two methods are simple , fast and accurate . a new optimal design of interleaves based on cascaded mach - zehnder interferometers is also presented . as compared with the two existing methods ( digital signal processing methods and fourier filters ) , the present method is simple and intuitive 本论文分析了mach - zehnder干涉仪级联形式之间的关系，提出了通带平坦化分叉复用器的新型设计方法，与现有两种方法(应用数字滤波器设计方法以及傅立叶展开法)相比较，本文提出的设计方法直观、简单。
First of all , the characteristics of different adaptive algorithms and equalizers are theoretically researched . then digital microwave communication system model is build by simulink . based on this model , the convergent behavior and bit error rate performance of three equalizers ( nlms , kalman and rls ) are compared in multi - path fading channel 为了达到这个目的,首先需要从理论上对各种自适应均衡算法以及自适应均衡器的特性进行深入研究;然后利用simulink建立接近实际环境的数字微波通信系统,在多径衰减信道环境下比较了三种基带均衡器( nlms , kalman和rls )的收敛特性以及系统误码特性,并比较了nlms基带均衡器和通带均衡器的性能。
This paper presents a model of cosine basis functions neural network based on bp algorithm , discusses the relation between the algorithm of neural network and amplitude - frequency characteristic about the linear phase fir filter , introduces the convergence condition of neural network algorithm , and studies the optimal design example about the high - order fir double - band - pass filters 提出了一种基于bp算法的正弦基函数神经网络模型及算法的收敛条件，研究了该神经网络算法与fir线性相位滤波器幅频特性的关系，给出了高阶双通带滤波器的优化设计实例。
The parameters of the long - range remote control receiving system are analyzed and simulated thoroughly , such as the signal to noise ratio ( snr ) at the receiver , the delicacy of receiver , auto - gain and band - width of the pass - band . then the important references are provided for the design of long - range remote control receiver 分析了远程遥控接收系统的参数如接收机输入信噪比、接收机灵敏度、自动增益和接收机通带带宽等，并对遥控接收系统性能指标进行了估算，为远程遥控接收机的设计提供了一定的理论依据。
This paper presents a model of cosine basis functions neural network based on bp algorithm , discusses the relation between the algorithm of neural network and amplitude - frequency characteristic about the linear phase fir filter , introduces the convergence condition of neural network algorithm , and studies the optimal design example about the high - order fir double - band - pass filters 摘要提出了一种基于bp算法的正弦基函数神经网络模型及算法的收敛条件，研究了该神经网络算法与fir线性相位滤波器幅频特性的关系，给出了高阶双通带滤波器的优化设计实例。
The main work of the system can be divided into four main parts as the following : ( 1 ) 10 . 5ghz bandpass filter the main contradiction of filter is caused by its function of dividing frequencies . in order to properly divide frequencies , not only need passband ’ s attenuation to be as small as possible and stopbands ’ as big as possible , but also need a sharp and quick change between the attenuation of passband and stopband , thus to make their diversity obvious 这四个功能模块分别是: (一) 10 . 5ghz带通滤波器滤波器的主要矛盾是由它分隔频率的功能决定的,为了使分隔理想,一方面要求通带的衰减尽可能小,阻带衰减尽可能大,亦即通带和阻带的衰减差值要尽量大;另一方面要求通带和阻带之间衰减的变化应尽可能快,最好是陡峭的跳变,使阻带和通带的分隔十分明显。
For phonetic signal modulation , if the pass band range of the band pass filter ( bpf ) is 300hz - 3400hz , the anti - noise properties of laser are approximately independent of bias current and parameters of the cavity ; when the pass band range of bpf increases to a certain degree , modulating bias current and parameters of the cavity can improve the anti - noise properties of laser 对语音调制情况，如带通滤波器的通带范围取为300hz - 3400hz ，则激光器的抗噪声性能基本不依赖于偏置电流和腔内参数；当带通滤波器的通带范围增大到一定程度，调整偏置电流和腔内参数可以实现半导体激光器的高抗噪声性能。
The hybrid method can simulate accurately both the imaging and polarization - dependent diffraction characteristics of a concave grating . to meet the growing need for flattened passband in a practical wdmsystem , three design methods , namely , the tapered output waveguide structure with air - slots , the three - focal - point method and the analytical method of spatial phase modulation , are introduced to achieve a passband - flattened diffraction grating device 针对实际光通信应用中对通带带宽的需求，本文提出了“结合空气槽的渐变输出波导结构方法” 、 “三焦点方法”及“显式公式空间相位调制法”三种使平面集成型衍射光栅波分复用器件获得平顶型频谱响应的优化设计方法。
