公开(公告)号：US20160216368A1

公开(公告)日：2016-07-28

申请号：US15004764

申请日：2016-01-22

Applicant: Navico Holding AS

Inventor： Roger Phillips ,  Andrew Corbett ,  Graeme Auckland ,  Gregor Storz ,  Lindsay Lilburn

IPC: G01S7/40 ,  G01S7/282

CPC classification number: G01S7/4008 ,  G01S7/282 ,  G01S7/2921 ,  G01S13/28 ,  G01S13/9307 ,  G01S13/956 ,  G01S2007/4013 ,  Y02A90/18

Abstract: Various implementations described herein are directed to adaptive frequency correction for pulse compression radar. In one implementation, a method may include generating a first transmission signal using a first direct digital synthesizer of a pulse compression radar system based on frequency sweep coefficients. The method may also include comparing a frequency of the first transmission signal at a feedback loop of a phase locked loop circuit and a frequency of an ideal waveform signal. The method may further include generating adaptive frequency coefficients based on the comparison, where the adaptive frequency coefficients are configured to compensate for a difference between the frequency of the first transmission signal at the feedback loop and the frequency of the ideal waveform signal. The method may additionally include generating a compensated transmission signal using the pulse compression radar system based on the adaptive frequency coefficients and the frequency sweep coefficients.

Abstract translation: 本文描述的各种实施方式涉及用于脉冲压缩雷达的自适应频率校正。 在一个实现中，方法可以包括使用基于频率扫描系数的脉冲压缩雷达系统的第一直接数字合成器来产生第一传输信号。 该方法还可以包括将锁相环电路的反馈环路上的第一发送信号的频率与理想波形信号的频率进行比较。 该方法还可以包括基于该比较生成自适应频率系数，其中自适应频率系数被配置为补偿反馈回路上的第一传输信号的频率与理想波形信号的频率之间的差异。 该方法可以另外包括基于自适应频率系数和频率扫描系数使用脉冲压缩雷达系统产生补偿的传输信号。