会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • On-ground radio altimeter calibration system
    • 地面无线电高度计校准系统
    • US6008754A
    • 1999-12-28
    • US910190
    • 1997-08-12
    • Mark G. Roos
    • Mark G. Roos
    • G01S7/40G01S13/88
    • G01S7/4004G01S13/882
    • To ensure that a radio altimeter indicates zero altitude when the aircraft is on the ground, an on-ground calibration system utilizes a calibration switch to initiate a calibration radio altimeter signal from the radio altimeter's transmitter section which is reflected off of the ground and received by the altimeter's receiver section. The time delay between transmission and reception of the signal is measured and a value representing the delay is stored in the altimeter's microprocessor. This value corresponds to zero altitude and can be used as the relative zero point for calculating altitudes of the aircraft when it is in flight.
    • 为了确保当飞机在地面时,无线电高度表显示零高度,地面校准系统利用校准开关从无线电高度计的发射机部分启动校准无线电高度计信号,该发射器部分反射离开地面并接收 高度计的接收器部分。 测量信号的发送和接收之间的时间延迟,并且表示延迟的值存储在高度计的微处理器中。 该值对应于零高度,并且可以用作计算飞机在飞行中的高度的相对零点。
    • 8. 发明授权
    • Modulator slope calibration circuit
    • 调制器斜率校准电路
    • US6072426A
    • 2000-06-06
    • US910189
    • 1997-08-12
    • Mark G. Roos
    • Mark G. Roos
    • G01S7/40G01S13/88
    • G01S7/4056G01S13/882
    • In order to provide for dynamic calibration of a radio altimeter which utilizes frequency modulated continuous waves having a triangular wave form, a selected frequency output of the altimeter is compared, during a calibration interrupt of the output of the altimeter, to a predetermine value for that frequency and if it differs, the frequency is adjusted to the correct value. Each frequency in the triangular wave is individually calibrated during separate calibration mode interrupts. Specifically, each frequency is calibrated by coupling a portion of the altimeter signal to a prescaler circuit and using the prescaler circuit in combination with a modulation frequency counter to input a value representing the frequency to a control microprocessor. The microprocessor then compares this value to a desired frequency and adjusts a value in a memory that is used to control the frequency output of a voltage controlled oscillator that is used to generate the frequency modulated continuous wave.
    • 为了提供使用频率调制的具有三角形波形的连续波的无线电高度计的动态校准,在高度计的输出的校准中断期间,比较高度计的选定频率输出到该高度计的预定值 频率,如果不同,频率被调整到正确的值。 在单独的校准模式中断期间,三角波中的每个频率都被单独校准。 具体地,通过将​​高度计信号的一部分耦合到预分频器电路并且将预分频器电路与调制频率计数器结合使用以将表示频率的值输入到控制微处理器来校准每个频率。 然后微处理器将该值与期望的频率进行比较,并调整用于控制用于产生调频连续波的压控振荡器的频率输出的存储器中的值。