公开(公告)号：US3714648A

公开(公告)日：1973-01-30

申请号：US3714648D

申请日：1971-10-22

Applicant: HONEYWELL INC

Inventor： BENNETT D ,  FOLLEN R ,  HARMAN C

IPC: B64C13/20 ,  G01C21/00 ,  G01C21/20 ,  G01S13/93 ,  G06J1/00 ,  G08G5/04 ,  G01S9/02

CPC classification number: G06J1/00 ,  G01S13/9303

Abstract: Circuitry for processing range, azimuth, and altitude data for determining time-to-collision (tau) between helicopters or other aircraft. Range data and azimuth data is received and stored in a fast, variable increment range register and fast azimuth registers respectively. Range data received at high rates is then transferred to two sets of slow registers in accordance with the azimuth and relative altitude of the range data. Results of successive sets of interrogations are compared to detect changes in range corresponding to a predetermined range of tau values.

公开(公告)号：US3761930A

公开(公告)日：1973-09-25

申请号：US3761930D

申请日：1971-06-23

Applicant: HONEYWELL INC

Inventor： BENNETT D ,  HARMAN C ,  FOLLEN R

IPC: G01S3/02 ,  G01S3/50 ,  G01S13/42 ,  G01S13/76

CPC classification number: G01S3/02 ,  G01S3/50 ,  G01S13/42 ,  G01S13/76

Abstract: The azimuth quadrant of an intruder aircraft is determined with a triangulation technique which makes use of the arrival times of cooperative signals from the intruder aircraft. The signals from the intruder are received by three antennas and depending on the antenna arrival times, logic signals are generated which set a pair of flip-flops to one of four states (1,1), (0,1), (0,0) or (1,0) indicating that the intruder is in the front, right, rear, or left quadrant, respectively.

Abstract translation: 使用三角测量技术确定入侵者飞机的方位角象限，利用入侵飞机的合作信号的到达时间。 来自入侵者的信号由三个天线接收，并且根据天线到达时间，产生逻辑信号，其将一对触发器设置为四个状态（1,1），（0,1），（0， 0）或（1,0）表示入侵者分别在前，右，后或左象限。