A small-scale

low platform

X-band ground-based Scatterometer LS-X4radar scatterometer is introduced in this paper.Here we describe the design idea and method for realization of small-scale andhigh intelligence transmits.The system transmitts linear frequency-modulated continuous waveform

and ithas long-term stability of high/low temperature.The specification of scatterometer is as follows:Type FM-CW Bandwidth of FM1200MHz Measuring precision of σ￣0±1dB Total weight of antenna platform≤25kg Height of antenna platform 3.5m Range of height 2─4m System power dissipation（excluding computer）30W Only one person can operate this system

and the rotation of antenna

the ad-iustment of polarization mode

the processing of measure can be controlled by handor program.This high intelligence scatterometer system consists of a microcomputer connec-ted with the antenna platform by a 15 20m cable

a LS-X4 intellegence interfaceboard and systemd diskette.When system running

the current window given by the system program guidethe user to operate easily If necessary

the user can expand the functions as desiredby himself and perform post-processing to the data.If the measuring process mustbe completed outside the door.a portable computer may be equipped.In conclusion

the LS-X4 ground-based scatterometer can be applied in labora-tory or outside the door

and provide service in many fields of microwave remotesensing.