Calculating methods of gyrated line s transformation to alleviated curve;

The helical segments are employed to calculate the normal mode helical antennas, and the current on the antenna is calculated by the method of moment with triangular basis functions and pulse testing method.

Probes into Translation Arithmetic of Symmetry Basic Circular Curve;

Derive the general calculation formula of circular curve, for calculating line-spot ordinate of incomplete adjustment curve.

This article mainly discussed some problems about clothoid transition curve in railway or highway winding section including a deduction method of clothoid equation, relationship of different presentations about similar formulas and comparition about cubic spiral equation and cubic parabola equation.

Applying the error theory, a precision of transition curve clothoid coordinate formula to design roads and bridges is analyzed and a conclusion according to 《Specification for Design of Highway Route》 is given.

This article has analysesed the dynamic forces applied on the vehicles riding along clothoidcurve with "central turning" superelevation and fifth power algibraic transition curve with thirdpower algibraic curve superelevation.

General expressions of clothoid and coordinates formula of special form is deducted,and then the fixed expression of clothoid coordinates formula satisfying the requirement of engineering s accuracy is given.

A clothoid curvature smoothing algorithm was presented according to the road curvature information from the GPS system and digital map.