JPH0346879U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example in which the echo detection device according to this invention is applied to a radar, FIG. 2 is a diagram showing an example of the stored contents of the timing memory 33, and FIG. 3 explains the operation of FIG. 1. FIG. 4 is a diagram showing a specific example of the angle synchronization circuit 34 in FIG. 1, FIG. 5 is a diagram showing an example in which each detection range corresponds to a plurality of areas for timing memory, and FIG. The figure is a block diagram showing an example of generating timing signals that are greater than the number of bits in one word of the timing memory 33.
Fig. 7 is a block diagram showing an example in which this invention is applied to a radar in which the angle signal and the transmitted repetition pulse are asynchronous, and Fig. 8 is a block diagram showing an example in which this invention is applied to a radar that does not perform retiming. .

Amendment September 21, 2002 The scope of claims for utility model registration is amended as follows.

[Claim for Utility Model Registration] Rotating a directional transmitting and receiving beam, transmitting a wave pulse from the directional beam , receiving a reflected wave of the wave pulse, and converting the received reflected wave signal into a digital signal. converting the converted digital signal, storing the converted digital signal in a memory, reading out the stored digital signal, converting the read digital signal into an analog signal and supplying it to a PPI display as a display signal,
An angle signal (hereinafter referred to as PPI angle signal) corresponding to the rotation angle position of the transmitting/receiving directional beam is supplied to a sweep signal generation circuit, and the PPI display is swept with the output sweep signal of the sweep signal generation circuit. Then, the angle signal (
In an echo detection device, an angle signal (hereinafter referred to as a marker angle signal) is supplied to the sweep signal generation circuit instead of the PPI angle signal during the angle marker display period to display the angle marker on the PPI display. , means for generating an electronic cursor gate for determining a period for displaying the angle marker during a period other than the period for reading the memory in the repetition period of the wave pulse; and generating a DC signal corresponding to the set offset value. An echo detection device comprising: offset signal generation means; and means for superimposing a DC signal from the offset signal generation means on the sweep signal of the sweep signal generation circuit during the period of the electronic cursor gate. The brief description of the drawing has been amended as follows. Page 23 of the specification, line 9, ``Block diagram, FIG. 2 is'' changed to ``Block diagram, FIG. I am corrected. In the specification, page 23, line 12, ``is in FIG. 1'' is corrected to ``is a diagram showing an example of display of the device according to this invention, and FIG. 5 is in FIG. 1''. Delete ``Figure 6 is a block diagram'' on page 23 of the specification, lines 14 to 16. Page 23 of the specification, lines 19-20, ``Figure 8 is a block diagram.'' was changed to ``Figure 8 is a diagram showing a conventional angle marker display, and Figure 9 is a diagram showing a conventional PPI sweep and angle marker sweep.'' This is a diagram showing the timing of
I am corrected.

Claims (1)

[Scope of utility model registration request] In an echo detector that rotates a directional beam for transmission and reception, transmits a wave pulse from the directional beam, and receives the reflected wave of the wave pulse, the clock signal source that generates the clock signal and the clock signal are counted. and a timing memory that is read out according to the address and generates a trigger pulse for generating the wave pulse and a timing gate for processing the signal of the received reflected wave. An echo detection device featuring: