Abstract
Range Sidelobe Level Reduction With a Train of Diverse LFM Pulses
Highlights
In state-of-the-art radar systems, frequency modulated (FM) waveforms are commonly used to simultaneously achieve a high signal-to-noise ratio (SNR) and good range resolution [1]
We propose novel methods to reduce the sidelobe level (SLL) of an Linear frequency modulation (LFM) waveform using a train of diverse pulses
We demonstrate an application of the proposed diverse LFM trains in an important emerging radar application: space surveillance of targets in the low Earth orbit (LEO) region
Summary
In state-of-the-art radar systems, frequency modulated (FM) waveforms are commonly used to simultaneously achieve a high signal-to-noise ratio (SNR) and good range resolution [1]. In applications requiring sensitive target detection at very large ranges, a loss in SNR is undesirable The purpose of this correspondence is to present a novel concept for SLL reduction without any SNR loss. Diverse random FM [15] and LFM [16] waveforms have been proposed as well These references describe various advantages of using diverse pulse trains, but do not deal with reducing the SLL in a systematic way. In this correspondence, we propose novel methods to reduce the SLL of an LFM waveform using a train of diverse pulses. The drawbacks of our approach are wider ACF mainlobe width (degraded range resolution) and an increased complexity for signal generation and processing
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