查询词典 homing system of guidance

The methods of theory analyses and digital simulation have been used in this thesis and several schemes of strapdown guidance law based on analyzing the performance of several classical guidance laws have also been present according to the characteristics of strapdown Anti-Radiation homing seeker. The stapdown guidance systems were built for a certain Anti-Radiation missile, adopting acceleration autopilot and the attitude autopilot, and the paper has focus on analyzing the performance of low frequency strapdown Anti-Radiation homing seeker. The Approaches of lead correction and dead-zone relay control were given to improve the guidance precision, and also the increasable observability law was attempt and validate.

本文采用理论分析和仿真实验相结合的方法，在对经典制导律进行理论分析和验证的基础上，针对捷联反辐射导引头的特点，提出了捷联制导律多种设计方案，并以某型反辐射导弹为应用背景，分别采用姿态角反馈自动驾驶仪和过载反馈自动驾驶仪构造了捷联制导系统，重点基于反辐射导引头的低频端特性，开展了捷联制导律的导引性能对比分析工作，提出了应用超前校正和带死区继电控制提高制导精度的方法，并对提高可观测性的捷联制导算法的实现思路进行了尝试和验证。

Based on wake features and operational principle of wake homing torpedo , this paper introduces some methods of soft kill , hard kill and non-kill ,such as gas generator , magnetic wake , torpedo net defense , depth bomb , anti-torpedo torpedo , stealth , and evasive maneuver. We summarizes three key points in the defense against wake homing torpedo , including high perfo口nance torpedo alarm system , rapid response acoustic countermeasure system , and multi-functional acoustic countermeasure device , to provide approaches to effectively countering wake homing torpedo.

该文基于尾流特征及尾流自导鱼雷工作原理介绍了用于对抗尾流自导鱼雷的气幕弹、磁尾流、拖网、深水炸弹和反鱼雷鱼雷等几种软杀伤和硬杀伤方法以及隐身技术和机动规避等非杀伤方法总结了舰船对抗鱼雷攻击3 个的关键环节包括高性能鱼雷报警系统、快速反应的水声对抗系统和多功能的水声对抗设施旨在为有效防御尾流自导鱼雷提供思路。

To implement this guidance law, the thesis purposed one new target state model and adaptive algorithm for radar homing missile attacking maneuvering target, which is based on the slowly changing of the tangential acceleration and the normal acceleration of the spiral maneuvering and snaking maneuvering in target trace frame coordinate system, and on that the most of them equipped with Strapdown Inertial Navigation System, to meet the demand of the advanced homing missile to target state, It can estimate target position, velocity and acceleration accurately by real-time processing.

为了实现该制导律，重点针对先进自寻的制导律对目标机动运动状态的需求和导弹系统大都具有捷联惯导系统的条件，基于目标螺旋机动和蛇形机动的切向加速度和法向加速度在目标轨迹活动标架上缓变的特点，本文提出了一种建立在目标轨迹活动标架上的运动状态方程和扩展观测方程的自适应估计算法。

Aiming at the diversification of function system and homing modes in the development of submarine-launched torpedo, this paper analyses the advantages in operational application of wake homing torpedo based on its mechanism, such as stronger counter-countermeasure, higher speed, and higher target acquisition probability for selected target. It also analyses the limitations in tactics, such as limited attacking speed and the types of attackable targets, greater loss in torpedo range, difficult combination with wire-guidance, and inaccurate attack on moving targets.

针对国内外潜射鱼雷在功能体制和制导方式等技术环节多元化发展的局面，基于尾流自导鱼雷制导原理，分析了尾流自导鱼雷在作战使用上的技术优势：抗干扰能力强，适宜高速制，可选择攻击目标和捕获概率高；以及其战术局限性：可攻目标的类型及速度受限，鱼雷航程损失大，与线导结合困难，对机动目标攻击效果较差。

It had an inertial navigation system with dual-band semi-active radar homing for mid-course guidance and an electro-optical sensor for autonomous terminal homing.

导弹的中段制导系统为带双波段半主动雷达的惯性导航系统，末制导为光电传感器自动末寻的。

Table 2.2 Infrastructure in different transport modes Road - Public No inherent guidance Infrastructure provided - Private Artificial, shared way centrally at public expense and at nominal cost to users Rail -Heavy Inherent guidance Track and control centrally - Light Artificial, dedicated way provided and charged to - Metro operators at full cost or owned by operators Air Natural, shared way Infrastructure provided by third party at full cost Maritime -Coastal/short Natural, shared way Infrastructure provided by sea No inherent guidance third party and charged at full Deep sea cost Inland water Natural or man-made Infrastructure provided by shared way third party and charged at full No inherent guidance cost Pipelines Artificial, dedicated way Infrastructure usually Inherent guidance provided by user All modes (except pipelines, although a travelator or moving walkway' may be considered a pipeline) carry both freight and passengers.

表2.2 不同运输方式的基础结构公路公共私人没有固有的牵引人造的，共享的方式基础设施由中央以公共费用和以使用者名义上的成本来提供铁路重型轻型地铁固有的牵引人造的，独占的方式铁轨和控制设施以完全成本的形式提供和向运营者收取费用或者由运营者所独有航空自然的，共享的方式基础设施由第三方提供并以完全成本方式收取费用海运沿海／近洋远洋自然的，共享的方式没有固有的牵引基础设施由第三方提供并以完全成本方式收取费用内河水运自然或人工的，共享的方式，没有固有的牵引基础设施由第三方提供并以完全成本方式收取费用管道人工的，专属的方式固有的引导基础设施通常由用户提供所有的运输方式（除了管道，尽管自动扶梯也可以被看作是一种管道）既能载人也能载货。

Simulation results show that the proposed guidance law can meet the demands for starting up the homing phase and so the handing over between mid-course guidance and terminal guidance can be carried out successfully.

仿真结果表明该中段制导律能满足末段启控条件，使得中、末交班得以顺利完成。

This method is based on the Snell law of acoustic propagation in water. Different velocity gradients among linear layers in water are utilized to draw the sound ray chart, and a mathematical model of the geometric operational range is built. Furthermore, the geometric homing range is predicted with sound ray density, a prediction system of geometric operational range for acoustic homing torpedo is designed and the function of the system is realized through a system software. The sea trial demonstrates the prediction validity of the system.

该方法基于声波在水中传播的Snell定律，利用水中各线性分层间不同的声速梯度，绘制声线图，建立了几何自导作用距离的数学模型，并通过声线密度对几何作用距离进行预报，设计了声自导鱼雷几何作用距离预报系统，并通过系统软件实现了其功能，经测试，该系统在海上试验中取得了良好效果。

The design of the torpedo acoustic homing system simulation platform based on HLAwas proposed for the torpedo acoustic homing system and its battle environment.

针对鱼雷声自导系统及其作战环境，提出了基于高层体系结构的鱼雷声自导系统仿真平台设计方案。

On the basis of analysing a dispersion error of target and torpedo,considering the rule of the acquisition range of homing system varying with the relative bearing,this article sets up a new method which can calculate the multi-continuous acquisition probability of homing torpedo.

本文在分析目标和鱼雷误差散布的基础上，结合自导作用距离随舷角变化的规律，建立了一套计算主动自导鱼雷多次连续捕获概率的统计求解法。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。