JPS6446775U

JPS6446775U -

Info

Publication number: JPS6446775U
Application number: JP14244687U
Authority: JP
Priority date: 1987-09-18
Filing date: 1987-09-18
Publication date: 1989-03-22

Description

[Brief explanation of the drawing]

第１図はこの考案による通信装置の構成図、第
２図は従来のもののブロツク図を示すものであり
、図において、１は移動体、２はアンテナ、３は
指向性アンテナ、４は駆動部、５は駆動信号、６
は制御部、７は送受信信号、８は送受信部、９は
通信信号、１０は受信信号レベル、１１は記憶部
、１２は角度位置信号、１３は逐次読出しデータ
、１４は最大受信レベル、１５は最大受信角度、
１６は受信レベル適合信号、１７は追尾確立レベ
ル、１８はゲート回路、１９は通信部、２０は送
信開始信号、２５は受信最大レベル検出部、２６
は比較部、２７は仰角判定部、２８は俯仰追尾禁
止信号である。なお、図中同一あるいは相当部分
に同一符号を付して示している。 FIG. 1 is a block diagram of a communication device according to this invention, and FIG. 2 is a block diagram of a conventional device. In the figure, 1 is a moving body, 2 is an antenna, 3 is a directional antenna, and 4 is a drive unit. , 5 is a drive signal, 6
1 is a control unit, 7 is a transmission/reception signal, 8 is a transmission/reception unit, 9 is a communication signal, 10 is a reception signal level, 11 is a storage unit, 12 is an angular position signal, 13 is sequential read data, 14 is a maximum reception level, 15 is a maximum reception angle,
16 is a reception level adaptation signal, 17 is a tracking establishment level, 18 is a gate circuit, 19 is a communication section, 20 is a transmission start signal, 25 is a reception maximum level detection section, 26
27 is a comparison section, 27 is an elevation angle determination section, and 28 is an elevation tracking prohibition signal. In addition, in the figures, the same or corresponding parts are designated by the same reference numerals.

Claims

[Scope of utility model registration request]

An antenna that transmits and receives CW waves, a mobile object that communicates while moving by transmitting and receiving signals from the antenna, a directional antenna that transmits and receives CW waves from the mobile object and directs it to the mobile object, and a drive that moves the directional antenna. a controller that controls the drive unit; an elevation determination unit that receives the angular position signal from the drive unit and determines whether the directional antenna is oriented at a low elevation angle; a communication unit that generates and receives communication signals, a storage unit that stores the received signal level and angular position signal from the transmission and reception unit, and a reception unit that detects the angular position at the maximum reception level from the data in the storage unit. It consists of a maximum level detection section, a comparison section that compares the received signal level level and the tracking establishment level, and a gate circuit that applies a gate to the maximum reception angle. After establishing tracking of a moving object by pointing the directional antenna to the maximum angle, avoid the influence of clutter by preventing the elevation angle of the directional antenna from becoming lower than a certain angle during tracking, and move. A passive tracking communication device that is characterized by ensuring stable communication with the body.