A near space platform station is the tried aerocraft that can quasi-stationarily fly for a long time in the near space area and can bear a payload with certain weight and size.

This paper investigates the resource allocation with power limitation in an OFDMA system used in HAPS.

According to the characteristic that the inter-cell interference factor of the HAPS CDMA system is lower than that of the terrestrial CDMA system,the disadvantage of the ring structure is pointed out and an improved multi-layer structure is proposed in which two adjacent terrestrial layers are seperated by several HAPS layers.

In this paper,first,the coverage,link loss and rain attenuation characteristics of high-altitude platform station(HAPS) communications systems are analyzed.

That is the background of floating-observation-platform in air.

This thesis is derived from the moving target tracking sub-system, which is a part of a firing control system with floating-observation-platform.

The firing control system with floating-observation-platform can raise air defense system s low level battle-capability considering recovery of our country.

Dynamic force analysis of fork rod of the aerial working platform in substation;

Stability analysis of aerial working platform in substation;