JP2003139849A5

JP2003139849A5 -

Info

Publication number: JP2003139849A5
Application number: JP2001332244A
Authority: JP
Filing date: 2001-10-30
Publication date: 2005-04-07
Anticipated expiration: 2021-10-30

Description

【００１１】
【課題を解決するための手段】
本発明は、複数の素子アンテナで受信した信号を用いて、マルチビーム形成後に受信レベルのピーク検出を行うピーク検出手段と、前記ピーク検出手段の検出結果を用いて受信信号について高分解能で測角処理を行う高分解能処理手段とを備えたものである。 [0011]
[Means for Solving the Problems]
The present invention uses the signals received by a plurality of antenna elements, a peak detection means for performing peak detection of the reception level after Ma Ruchibimu formed, the angular measurement for the received signal with high resolution by using a detection result of the peak detection means And high resolution processing means for performing processing.

Claims

Using signals received by a plurality of antenna elements, a peak detection means for performing peak detection of the reception level after Ma Ruchibimu formation,
Radar apparatus, comprising a high-resolution processing means for measuring at high resolution angular processes the received signal using the detection result of the peak detection means.

The radar apparatus according to claim 1, wherein the high resolution processing means performs angle measurement processing with high resolution by limiting to the azimuth around the peak of the reception level detected by the peak detection means.

The radar apparatus according to claim 1 or 2, wherein the high resolution processing means performs angle measurement processing by applying a maximum likelihood estimation method.

The radar apparatus according to claim 1, wherein the high resolution processing means performs an angle measurement process using a MUSIC.

Multi-beam forming means for directing a plurality of antenna beams using signals received by a plurality of element antennas;
High resolution processing means for obtaining angles of two or more targets within the antenna beam width around the antenna beam receiving the target signal most strongly for the antenna beam directed by the multi-beam forming means;
A radar apparatus comprising:

Monopulse angle measurement means for performing monopulse operation on the received signal to form a Σ signal and a Δ signal, and detecting a target existing direction from the obtained Σ signal and Δ signal;
Determining a target number of presence from the angle error results calculated by the monopulse angle measuring means, and selecting means for selecting whether to use the high-resolution processing means based on the determination result,
The radar apparatus according to any one of claims 1-5, characterized in that to obtain Bei a.

The selection means is characterized in that, when the number of target existences determined by the monopulse measurement means is 1, the measurement result of the monopulse measurement means is selected, and when the number of target existences is plural, high resolution processing means is selected. The radar apparatus according to claim 6 , wherein

It has a transmitting antenna that transmits FMCW waves,
The signal according to any one of claims 1 to 7, wherein at least the direction in which the target object is present is measured using signals transmitted from the transmitting antenna, reflected by the target and received by a plurality of element antennas. Radar equipment.

Monopulse angle measuring means for performing monopulse angle measurement after multi-beam formation using signals received by a plurality of element antennas;
Selection means for determining the target presence number from the angular error result calculated by the monopulse angle measurement means, and selecting whether or not high resolution angle measurement processing is to be performed on the received signal based on the determination result;
A radar apparatus comprising:

In a radar apparatus, at least a direction in which a target object is present is measured by using signals transmitted from a transmitting antenna to transmit an FMCW wave and reflected from a target and received by a plurality of element antennas,
A radar apparatus characterized in that the angle measurement result of the monopulse angle measuring means is selected when the target number of existence is one, and the high resolution processing means which performs angle measurement processing with high resolution when the target number of existence is plural. .