The operational capability of EW on sea battlefield is analyzed,and the challenges faced by EW on sea battlefield are discussed.

This paper discusses some threats that naval electronic warfare systems must face with in the high technical warfare:more sensors threat against naval electronic support measures,more fatal anti ship missiles threat against naval ship,electro optical equipments become new and chief threat against naval ship,and suggests emergency measures.

Finally,this paper constructed the system model and whole frame of visualization system for sea-battlefield electromagnetic environment.

A study on coordinated detection and target synthetic identification in sea battlefield;

In order to quantify the ability of capturing information for early-warning and detecting system in sea battlefield, this paper introduces the concept of perceptibility.

The Information Warfare(IW) on sea battlefield is based on the information constructing of sea battlefield.

A situation-visualization oriented spatio-temporal data model for naval battlefield;

Comprehensive intelligence system applied to naval battlefield against joint integration operation background

By studying these models and analyzing the featue of the naval battlefield,oriented-object spatial data model is adopted and supplied.

At present the information system of the naval battlefield is too simple to meet the demand of complicated applications.

Directed against the defect of naval information systems at present,spatio-temporal data model on the naval battlefield is constructed and support designing the prototype system of STDBMS-NB.