The thickness and angle of obstacles have been considered by the site survey estimation method for the wireless ad hoc network with the path loss contour estimation method and the system performance measurement. The site survey estimation tool can be realized by the AutoCAD and Linear Prediction Estimation (LPE) method. This tool is very important for the future use of the commercial wireless LAN systems for field tests and cell planing of Ad Hoc network. 我們由障礙物的厚度及角度來研究無線 ad hoc 網路的場所測量估計法。這項研究由系統執行量測法提供了更正確的路徑損耗輪廓測量。我們可以由 AutoCAD 及數值分析來實現場所測量估計工具(EPT)。這個工具對於未來使用無線電區域網路的環境測試及 ad hoc 網路的組織設計是很重要的。