What is DSP in radar?

What is DSP in radar?

In the modern Radar systems digital signal processing (DSP) is used extensively. We may also require fast digital interfaces to detect antenna position, or control other hardware. The main task of a radar’s signal processor is to make decisions.

What is the difference between FMCW and pulse radar?

With FMCW technology, the transmitter emits a continous signal and determines the distance to the target by measuring the frequency difference between the emitted and the reflected signals. With pulse radar, the transmitter sends a pulse and then stops and waits for a reflection.

What does FMCW stand for?

Frequency Modulated Continuous Wave Technology Frequency Modulated Continuous Wave (FMCW) technology improves radar level measurement.

How does a FMCW radar work?

FMCW (Frequency Modulated Continuous Wave) radar differs from pulsed radar in that an electromagnetic signal is continuously transmitted. The frequency of this signal changes over time, generally in a sweep across a set bandwidth. Instead, the FMCW radar emits an RF signal that is usually swept linearly in frequency.

What are the basic elements of DSP?

What are the basic elements of digital signal processing?

• Program Memory: Stores the programs the DSP will use to process data.
• Data Memory: Stores the information to be processed.
• Compute Engine: Performs the math processing, accessing the program from the Program Memory and the data from the Data Memory.

What are the limitations of CW radar?

There is a limitation by the power in the maximum range of the CW radar. Maximum power depends on the amount of isolation and the transmitter noise, which affects the receiver sensitivity. The target range cannot be obtained by the CW Doppler radar. When there is a number of targets there is a possibility of ambiguity.

Does radar need line of sight?

At the frequencies normally used for radar, radio waves usually travel in a straight line. The waves may be obstructed by weather or shadowing, and interference may come from other aircraft or from reflections from ground objects (Figure 1).

Why FMCW radar is not suitable for long range detection?

Simple continuous wave radar devices without frequency modulation have the disadvantage that it cannot determine target range because it lacks the timing mark necessary to allow the system to time accurately the transmit and receive cycle and to convert this into range.

What are the disadvantages of CW radar?

Disadvantages of CW Doppler Radar

• There is a limitation by the power in the maximum range of the CW radar.
• Maximum power depends on the amount of isolation and the transmitter noise, which affects the receiver sensitivity.
• The target range cannot be obtained by the CW Doppler radar.

Why Fmcw radar is not suitable for long range detection?

What are the disadvantages of DSP?

Following are the disadvantages of DSP: ➨The use of DSP requires anti-aliasing filter before ADC and re-construction filter after DAC. Moreover it requires ADC and DAC modules. Due to use of this extra components complex of DSP based hardware increases.