RFbeam Microwave GmbH

RSP1 Radar Processor

Datasheet

8.4 Sampling Rate and Frequency Resolution

FFT frequency resolution:

Frequency resolution df depends on sampling rate fs and on FFT size FFT_N.

FFT_N = 256 (for RSP1); fs = depends on parameter S03; df = fs / FFT_N.

Example:

Parameter S03 = 2 -> sampling rate = 2*1280Hz = 2560Hz --> df = 2560Hz / 256 = 10Hz

We want also filter out very slow movements at 10Hz and

100Hz interference, typically caused by fluorescent lights in 50Hz mains.

Parameter

S03

sample rate

Hz

resolution

Hz

max. frequency

Hz

resolution

km/h

max speed

km/h

update time

01

1'280

5

640

0.11

14.5

200

02

2'560

10

1'280

0.23

29.1

100

03

3'840

15

1920

0.34

43.6

67

04

5'120

20

2''560

0.45

58.2

50

05

6'400

25

3'200

0.57

72.7

40

06

7'680

30

3'840

0.68

87.3

33

07

8'960

35

4'480

0.80

101.8

29

08

10'240

40

5'120

0.91

116.4

25

09

11'264

44

5'632

1.00

128.0

23

0A

22'530

88

11'265

2.00

256.0

12

Note 1): response time on host interface. Digital output depends also on params $A03 and $S02

Tabelle 13: Sampling rate - resolution - speed

9 Bootloader

RSP1 processor contains a fix programmed bootloader featuring:

•

Storing, programming and copying parameter settings (EEPROM)

•

RSP1 Firmware updating

•

Access via the Serial Debug Interface

A PC program RSP_Prog Software comes with the RSP1_Eval-Kit.

Refer to RSP1_Eval-Kit_User Manual.pdf

DO NOT TRY TO ERASE or program RSP1 processor with any different programming tool.

Bootloader will be lost and RSP updating will no longer be possible.

RFbeam will not recover erased chips.

10 RSP1 Memory Organization

Storage item

Storage location

Purpose

Programmable by

RSP_Prog

Serial interfaces

User Parameters

EEPROM

Initially a copy of default parameters.

Changable by $S and $X parameters

YES

YES

Default parameters

EEPROM

Factory default values

YES

NO

Firmware

Flash

RSP1 functionality

YES

NO

Bootloader

Flash

Used for programming flash and default

parameters

NO

NO

© RFbeam Microwave GmbH www.rfbeam.ch

December 11, 2015

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