surveying calculation

The mathematical principle of area surveying and mapping by enclosed guideline measurement using Microsoft office Excel was presented in detail, and put forward the calculation method of automatic adjustment, printing according to requirement and should be applied into practice.

详细阐述Microsoft office Excel在导线闭合法面积测绘应用中的数学原理，提出自动平差的算法和图形以所需比例打印输出的方法，使该项应用实用化。

On Horizontal Distance Calculation with Electromagnetic Distance Measurement in Urban Surveying

关于城市测量中电磁波测距平距计算问题

LJ ship with computer surveying flow system is the hydrology test instrument which can volunteer to complete sounding, surveying velocity, surveying calculation and so on. According to the test of Harbin Hydrology station, this system can be used in the big and middle rivers.

LJ船用微机测流系统是能自动完成测深、测速、流量计算等一系列工作的水文测验仪器，经过哈尔滨水文站检验，证明该系统可以在大中河流测站使用。