顾及航海与非航海服务显著差异的数字水深模型严密转换理论与方法

Depth models require "shoal-biasing" for the ship safety in navigation services and require "fidelity" for the accurate terrain representation in non-navigation services. However, current depth models, which do not consider the distinct difference between navigational and non-navigational services effectively, are simply and disorderedly used and imprecisely converted between navigational and non-navigational services, which may result in potential dangers for navigational services, and also lead to unnecessary losses of the representation accuracy for non-navigational services. This project will adequately analyze the difference of requirements between navigational and non-navigational services, construct the association of models simultaneously considering two kinds of different requirements, explore the theory of fine estimating and quantitative adjusting for the model conversion, propose strict methods for converting depth models between navigational and non-navigational services. The achievements of the project are possible to inaugurate a new thought and propose new technical methods for converting depth model between navigational and non-navigational services, which makes the percentage of safety assuring of depth models reach 97.5% and the percentage of navigational resource utilizing optimum for navigational services and the accuracy meet concrete requirements for non-navigational services.

水深模型在航海服务中从安全要求出发强调"取浅"，在非航海服务中从精确要求出发强调"保真"。而当前水深模型未有效考虑航海与非航海服务之间的这种显著差异,在航海与非航海服务之间简单混用、随意转换,这既有可能给航海服务带来不安全的隐患，也会给非航海服务带来不必要的精度损失。本项目将充分分析航海与非航海服务对水深模型需求的不同，建立起两种不同服务的模型之间的关联，探索水深模型转换质量的精细评估和定量调控理论，提出航海与非航海服务之间的水深模型严密转换方法。本项目的成功实施可望为航海与非航海服务之间的水深模型转换开辟新的研究思路和提出新的技术方法，使水深模型用于航海服务时安全保证率能达到97.5%以上且航行资源利用率达到最优、用于非航海服务时能满足具体应用的精度指标需求。