Apparatus and method for obtaining radar signal

Patent metadata

Field	Value
Publication number	US-9470783-B2
Application number	US-201414156244-A
Country	US
Kind code	B2
Filing date	Jan 15, 2014
Priority date	Jan 24, 2013
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

Provided is an apparatus and method for obtaining a radar signal, the apparatus including a radar transmitter to radiate a plurality of split band penetration signals toward a target object, and a radar receiver to receive a plurality of signals reflected from the target object, and to obtain a wideband response signal using the plurality of reflected signals.

First claim

What is claimed is:

1. An apparatus for obtaining a radar signal, the apparatus comprising:
a radar transmitter to radiate a plurality of split band penetration signals toward a target object; and
a radar receiver to receive a plurality of signals reflected from the target object, and to obtain a wideband response signal using the plurality of reflected signals;
wherein the radar transmitter sets a channel to each of the plurality of split band penetration signals, converts a band of each of the plurality of split band penetration signals to a different pass band corresponding to the set channel, and radiates each of the plurality of split band penetration signals; and
wherein the radar transmitter converts the band of each of the plurality of split band penetration signals to the pass band by up-converting the band of each of the plurality of split band penetration signals by a carrier frequency corresponding to the set channel.

2. The apparatus of claim 1 , wherein the plurality of split band penetration signals and the plurality of reflected signals are based on an orthogonal frequency division multiplexing (OFDM) method.

3. The apparatus of claim 1 , wherein the radar receiver converts a band of each of the plurality of reflected signals to a baseband, estimates a channel of the converted band of each of the plurality of reflected signals, obtains a channel estimate value corresponding to the estimated channel, and obtains the wideband response signal based on the obtained channel estimate values.

4. The apparatus of claim 1 , wherein the radar transmitter receives setting information comprising at least one of the number of channels corresponding to the plurality of split band penetration signals, a channel bandwidth of each of the plurality of split band penetration signals, the number of subcarrier per channel, binary phase-shift keying (BPSK) training data, and a transmission command signal, generates the plurality of split band penetration signals based on the received setting information, and radiates the plurality of split band penetration signals.

5. The apparatus of claim 1 , wherein the radar transmitter outputs a transmission synchronization signal to the radar receiver, and the radar receiver is synchronized with the radar transmitter using the transmission synchronization signal.

6. A method of obtaining a radar signal, the method comprising:
radiating a plurality of split band penetration signals toward a target object; and
receiving a plurality of signals reflected from the target object, and obtaining a wideband response signal using the plurality of reflected signals;
wherein the radiating comprises:
setting a channel to each of the plurality of split band penetration signals; and
converting a band of each of the plurality of split band penetration signals to a different pass band corresponding to the set channel, and radiating each of the plurality of split band penetration signals; and
wherein the converting and the radiating comprises converting the band of each of the plurality of split band penetration signals to the pass band by up-converting the band of each of the plurality of split band penetration signals by a carrier frequency corresponding to the set channel.

7. The method of claim 6 , wherein the plurality of split band penetration signals and the plurality of reflected signals are based on an orthogonal frequency division multiplexing (OFDM) method.

8. The method of claim 6 , wherein the obtaining comprises converting a band of each of the plurality of reflected signals to a baseband, estimating a channel of the converted band of each of the plurality of reflected signals, obtaining a channel estimate value corresponding to the estimated channel, and obtaining the wideband response signal based on the obtained channel estimate value.

9. The method of claim 6 , wherein the radiating comprises:
receiving setting information comprising at least one of the number of channels corresponding to the plurality of split band penetration signals, a channel bandwidth of each of the plurality of split band penetration signals, the number of subcarrier per channel, binary phase-shift keying (BPSK) training data, and a transmission command signal; and
generating the plurality of split band penetration signals based on the received setting information, and radiating the plurality of split band penetration signals.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Dong Kyoo

Classifications

• G01S13/0209 Primary

  Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband · CPC title

• G01S13/885

  for ground probing (prospecting or detecting using electromagnetic waves G01V3/12) · CPC title