24GHz FMCW Radar User Manual
Contents
1. Name Main sub unit Key function Front end Patch array antenna for Transmit 24 125GH 200MHz band FMCW signal to TX and RX target receive return signal 24GHz Transceiver with TX send 8dBm FMCW signal controlled by DSP 2CH RX 2CH RX send mix 1 25MHz beat signal to back end Back end TX controller Send FMCE refer to TX get accuracy frequency band and linearity RX DSP unite ADC and FFT convert for DSP Interface Radar data ready to host PC Cable DDS to TX 2CH RX to ADC Ethernet interface to Radar data for main DSP or host PC for map host computer Host PC Radar data and map Operate radar Table 1 FMCW Sensor Radar Basic Parts and Key Function List www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 4 Changxiang Electronics Ltd 3 24GHz FMCW Front End 3 1 Photo and Draw of Front end Fig 3 is the photo and design draw with outlet size of 24GHz FMCW front end The unit is in inch Fig 3 1 Antenna Photo Fig 3 2 Tr2. Page 8 4 3 Check front end Works by Spectrum Analyzer Page 8 5 Front end With Back end User Manual csccssccseseeeees Page 9 5 1 Requirements mn Page 9 5 2 Setting Up the FMCW Sensor Page 9 6 24GHz FMCW Radar User Manual essessossssensnnsnennnnensnennne Page 10 6 1 Requirement Page 10 6 2 Setting up the FMCW Radar Page 10 6 3 Operate FMCW Radar Page 11 6 4 Test Set and Record FMCW Radar Data Page 12 6 4 1 Outdoors Set Page 12 6 4 2 Indoor Set Page 12 6 4 3 Zoom for Outdoors Set Page 12 6 4 4 Function of Radar Map Operate Key Page 13 6 4 5 Radar Data Format Page 14 7 Typical 24GHz Radar Specification ccscsscesseecesseeesees Page 16 www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 2 Changxiang Electronics Ltd Changxlang 1 Application Fields This radar is typical used to detect vehicle with max distance 200m or detect human inside 50m The range resolution is 1 meter or less design value is 0 75m Attached Fig 1 is the test photo for vehicle in 120meters
3. he total number of target 9 2 8 257847e 000 8 260359e 000 5 023956e 002 4 428306e 00 0 000000e 000 9 197966e 002 1 643694e 002 2 1 242235e 00 1 254273e 001 2 407570e 000 5 744363e 00 0 000000e 000 1 145791e 004 5 159707e 000 2 2 356006e 00 2 352744e 001 6 524658e 001 5 544279e 00 0 000000e 000 1 834682e 002 3 610926e 001 2 4 667465e 00 4 667085e 001 7 598877e 002 5 267740e 00 0 000000e 000 2 331109e 001 6 142309e 002 2 5 536811e 00 5 536304e 001 1 014709e 001 4 116022e 00 0 000000e 000 5 191031e 001 5 456548e 002 2 7 849271e 00 7 847962e 001 2 618408e 001 6 166935e 00 0 000000e 000 1 105290e 000 2 997726e 002 2 9 796005e 00 9 790948e 001 1 011353e 000 6 271648e 00 0 000000e 000 1 351163e 002 9 686044e 001 2 1 865963e 002 1 868374e 002 4 820557e 000 6 752603e 00 0 000000e 000 4 108958e 002 3 870847e 001 2 1 948824e 002 1 948898e 002 1 483154e 001 3 985904e 00 0 000000e 000 5 751307e 001 1 313973e 003 iaaa a a a Fig8 Radar Data Format www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 14 Changxiang Electronics Ltd One typical radar data is shown in Fig 8 It gives 2 pages of no scan radar data Each page tells how many target radar detect Let just analyzes page 1 It list the page number in 1 row Then give the Range from 8 3m to 194 9m in 2 row follow the Pred Range in 3 row which means the
4. mm Changxiang Electronics Ltd Changxiang 24GHz FMCW Radar User Manual FMCW front end transmits period liner triangle wave in frequency time plane It swept band B at time T slop k B T Return signal reflected by target has time delay td td 2R C with Doppler frequency fd The coherent output beat signal is equal to fb 2B CT R fd Back end detect fb by DSP in slop period Range and velocity of target is tested with amplitude Azimuth or elevation angle could be obtained by mono pulse antenna or beam forming technology Mechanical scanning usually in azimuth direction is used for wide scanning range Radar data will generate radar map on Host PC screen www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 1 Changxiang Electronics Ltd Changxiang CONTENT 1 Application Fields ana Page 3 2 Basic Parts of 24GHz FMCW Sensor Radar 0000 Page 4 3 24GHz FMCW Front End csssccssssrssccsssseccsesssscssssscesesssnseses Page 5 3 1 Photo and Draw of Frontend _ Page 5 3 2 24GHz FMCW Radar Diagram Block _ Page 6 3 3 TX Frequency Setup Page 7 4 Front end only User Manual susssessnnsnsosnnnnnenennnnnunsnenennne Page 8 4 1 Requirements List Page 8 4 2 Setting Up the FMCW Front end _
5. antenna Receiver Noise N dB 3 4 Dynamic range DR dB 60 80 With 12 bit ADC Size LxWxH inch 5 9x3 8x0 52 Weight g lt 300 DC supply V I V A 5V 0 5A 3V 0 5A 5V 0 2A Current rate is 1A Interface DB9 and SMA Back End Fm frequency KHz 0 25 0 5 1 2 4 5 8 10 1KHz default Freq time function Fm F t MHz Any range between 10 210 0 05 linearity DAC sample Freq fsamp MHz 2 5 1 25 0 625 2CH FFT bit 128 256 512 512 default Scan Model Fixed beam Fixed beam default 360 deg scan 18 36 45 90 sector Scan rate Fs Hz 0 1 0 25 0 5 1 2 2 5 4 5 1Hz default Scan stepper Ss deg 1 8 Target number 16 for fixed beam Just for radar map 4 for each 1 8 deg stepper Interface DB9 with SMA Ethernet to PC DC connector Typical Radar Spec Max range Rmax m Human 30 50 Car 100 200 Min range Rmin m 0 Rmax l Range resolution dR m 1m B 200MHz 0 2m B 1GHz Max velocity Vmax M s 60 Velocity resolution dV M s 1 Optional to 0 2 0 5 www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623
6. Range Velocity Azimuth angle j 1 2 N the maximum N is inter number of Rmax range resolution as long as target amplitude is larger than Amplitude threshold typical is 70dBm For example Rmax 200m dR range resolution is 1m radar maximum radar data will include 200 targets each target has at least 4 parameters Radar data are digit store in memory inside DSP or host PC To use the FMCW sensor requirements parts are listed Fundament parts Radar Front end ELEC 24GHz FMCW front end 24G T1R2 WS WB2 refer fig 2 Radar Back end ELEC DSP board Cables DB9 to DB9 cable Ethernet cable 3 SMA to SMA Optional parts Power Supplies Capability to generate 9V 600mA 5V 500mA 5V 200mA 3V 500mA Host computer Check radar data 5 2 Setting up the FMCW Sensor 1 Connecting the Radar front end and back end with the DB9 to DB9 cable And 3 SMA Cables 2 Connecting the back end DSP box Banana plugs to DC power supplies 9V 5V 3V and 5V 3 Connecting the back end DSP box USB interface to host computer 4 Turn on all DC supplies If not turn on in the same time Turn on 5V before turn on 3V 5 Check radar data on host computer www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 9 Changxiang Electronics Ltd Changxiang 6 24GHz FMCW Radar User Manual 6 1 Requirement FMCW Radar sensor only output radar data It is hard f
7. There is a big truck in 44 meter but is at adjacent lane which is at least 4meter long The radar map shows exactly 1target in 120m and 2 targets in 44m and 47m The radar data will provide target or targets information as Amplitude Range Velocity Azimuth angle by mono pulse and time gap for next time see target again with distance at that time The last 10 pages radar data is stored in DSP memory and can be send out thru Ethernet cable The host computer with radar map code will operate radar and display radar map r T VO AESLIZZEEEITTTERTTTTITEN www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 3 Changxiang Electronics Ltd 2 Basic Parts of 24GHz FMCW Sensor Radar 24GHz FMCW radar is formed by front end back end connect cable and optional host PC Front end has dual antennas and transceiver Transceiver has FMCW TX which is controlled by back end to generate FMCW signals It shares 1 antenna with 1 RX CH There are 2 RXs to get mono pulse function in Azimuth plane Back end has TX signal controller to generate linearity FMCW signal It has 2 CH ADC to process mono pulse signal if digit format Back end output radar data thru USB interface to main DSP as FMCW sensor or to host computer as FMCW radar Host computer must have radar map code to run the radar Figure 2 is the photo for main parts Table 1 lists main parts and key function Fig2 Main Parts
8. a cell is scan range 1 8 The code set 50ms as upgrade time for no scan model In other words Nc 50 when Fm 1KHz So that radar data cell is equal to 1 page of radar data only for no scan model Page Range Pred_Range Vel Level Az El Time w In In s dB deg deg s ekklesia oko eof he total number of target 10 8 258595e 000 8 256050e 000 5 088806e 002 4 4296 40e 00 0 000000e 000 4 644889e 002 1 622894e 002 242343e 00 1 241894e 001 8 979797e 002 5 762337e 00 0 000000e 000 4 543343e 003 1 383487e 002 2 359644e 00 2 362646e 001 6 004333e 001 5 566792e 00 0 000000e 000 4 292140e 002 3 929902e 001 4 667752e 00 4 668222e 001 9 399414e 002 5 277904e 00 0 000000e 000 715591e 001 4 966003e 002 5 536511e 00 5 536569e 001 1 159668e 002 4 118474e 00 0 000000e 000 5 581319e 001 4 774221 003 7 850197e 00 7 864035e 001 2 767639e 000 6 168728e 00 0 000000e 000 1 092745e 000 2 836423e 001 9 797610e 00 9 788319e 001 1 858215e 000 6 264806e 00 0 000000e 000 5 726362e 002 5 272591e 001 1 164773e 002 1 162358e 002 4 829102e 000 6 529134e 00 0 000000e 000 593266e 000 2 411987e 001 1 866552e 002 1 867376e 002 1 646729et000 6 771371e 00 0 000000e 000 1 917515e 001 1 133491e 002 1 948862e 002 1 948799e 002 1 245117e 001 3 996028e 00 0 000000e 000 5 756488e 001 1 565203e 003 pian aa a aeaa a a a Daa SSE a a aa aa a a SASH SHE ASHES a e a a aa OE
9. ansceiver Photo 1 f T I et I T T 1 en Tr ce i el 1 f T T EN I I T 1 Er E Er zit us ee e L 4 nm f i i i i Dr gl Im f E it i E T L ie al oo mp af a m m i ST a Sl E a en E E le al i Ee Ee aie oo abe el L TO zu ol Ea 7 a oso Eo a In Eure gg f I I I I m i SE S er H 1 gt ie i FE Er ae eee ai 1 li i I i ER i 7 1 ren ele es ee le ee a je 3 5500 Fig 3 3 Antenna and Transceiver Design draw and outlet size in inch www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 5 Changxiang Electronics Ltd 3 2 24GHz FMCW Radar Diagram Block Micro Fr Fe k t td id 2R C DAC J N code 99000000000 DC Supplies Interface o 000000000 5Y 33V 5V SV 33V 18V 5Y 33V25V12V DSP Yee DSP Ydd DC Comverter Board Standard FMCW Radar Diagram Block Fig4 24GHz FMCW Radar Diagram Block www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 6 Changxiang Electronics Ltd Changxlang 3 3 TX Frequency Setup As shown in Diagram Block of 24GHz FMCW radar micro controller inside the front end and DSP core of back end sets TX parameters TX parameters are center frequency fo swept band B and modulation frequency Fm The TX of 24 GHz front end is a 24GHz VCO locked by a synthesizer which is operated by a micro controller A 16 prescaler is used to div
10. ency is 533 3KHz Maximum Doppler frequency is less than 10KHz if maximum relative velocity is 140mph They are inside the limitation 1 25MHz www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 7 5 Changxiang Electronics Ltd Changxiang 4 Front end only User Manual 4 1 Requirements List Standard product Radar Front end ELEC 24GHz FMCW Front end Cable DB9 to Banana Plugs cable for 5V 3V 5V 3 SMA to SMA Cables For Fm fbr and fba Customer have Power Supply Capability to generate 5V 500mA 3V 500mA and 5V 200mA Function Capability to generate any frequency range inside 10 210MHz Generator Triangle wave in F T plane 9dBm 50ohm 0 05 linearity 1 or 10KHz stepper Measurement Spectrum analyzer this manual recommended or customer PC which has FMCW DSP function 4 2 Setting Up the FMCW Front end 1 Connecting the Radar front end with the DB9 side of the cable 2 Connecting the Banana plugs of the cable with power supply and provide 5V 500mA 3V 500mA and 5V 200mA DC to radar front end 3 Connecting SMA cable between Fm and the Function generator Set function generator fstart 180 19MHz fstop 181 69MHz and select triangle wave form Or the value agreement before delivers The power is 8 1dBm for 50ohm load 4 Connecting the Spectrum analyzer with SMA cables named the FBA or FBR port of t
11. han 70dBm And range is from 0 to 200m Because of the range resolution is 1m so that maximum targets in radar data is 200 Radar map will zoom range window by reselect Rmain and Rmax as long as 0 lt Rmin lt Rmax lt 200m Beside of it radar map will filter less important target by reselect Aref 70dBm lt Arfef lt 10dBm Input radar parameters then click START button to save the configuration and turn the radar front end on 3 Launch Matlab 7 0 Set folder tcp_udp_ip as Current Directory then type command radar to run radar map program 4 When the radar map program comes out as Fig 6 shows the 24GHz FMCW radar system will be ready to use www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 11 a Changxiang Electronics Ltd Changxlang 6 4 Test Set and Record FMCW Radar Data 6 4 1 Outdoors Set Test Photo shown in Fig 1 sets Aref 60dBm Rmin Om and Rmax 150m This set is for ELEC outdoor test field which maximum range is 150m 6 4 2 Indoor Set Test photo shown in Fig 6 sets Aref 35dBm Rmin Om and Rmax 15m This set is for ELEC indoor test field which maximum range is 13 5m when door closed The target is set at 6m 6 4 3 Zoom for outdoors Set Test photo shown in Fig 7 zoom outdoor test field for Rmin Om Rmax 50m and Aref 60dBm One person is stand at 35meters and left offset of antenna beam A truck is parked at 44meter and right
12. he cable 5 Turn on DC supplies Note 5V DC supply should be the first one for turn It is the best turn all 3 DC supplies at the same time 4 3 Check front end Works by Spectrum Analyzer The frequency of fb signal is equal to 4BFm C R fd Where fd 2Vd C fc C is light velocity 3x10 8m sec Vd is target velocity R is the distance of the target At 24GHz carrier fd 161Hz when target radial velocity is 1m s It is much smaller than range frequency Spectrum Analyzes test is just for static target because spectrum analyzer has no FMCW process function It only has DAC and FFT function So the return frequency is 2 667KHz per meter When B 200MHz Fm 1KHz In other words read spectrum analyzer output frequency then divided by 2 667 it is the range of the target The amplitude should be larger than 70dBm march ELEC back end sensitivity The signal to noise ration is 10dB or higher If customer has FMCW DSP or host PC to process FMCW radar signal the connection is referred to the follow section www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 8 Changxiang Electronics Ltd Changxlang 5 Front end With Back end User Manual 5 1 Requirements Front end work with ELEC DSP back end is the FMCW sensor It output radar data thru USB interface to host DSP or host PC The radar data contact all information of targets The detail radar data parameters are Amplitude
13. ide 24GHz frequency down to 1 5GHz so that synthesizer can process The maximum Phase Detector Frequency Fpdf of synthesizer is 250MHz The minimum divider number for VCO frequency is 24 The DSP can provide any frequency band between 10 210MHz with 0 05 linearity FMCW signals in 10KHz stepper frequency The fo and B from PLL set maybe different with design value The order of set rule are 1 let tolerance of B as small as better Most set can reach tolerance is zero 2 let tolerance of fo smallest 3 let Fpdf as high as better for lower phase noise issue Fo and B can be adjusted by the requirement from customer to customer Typical fo range is from 23 4GHz to 24 2GHz The value of B is from 10MHz up to 1GHz maximum of fo is less than 23 8GHz when 1GHz band required Anyway they are not changed after ELEC pre set The waveform of swept band is triangle wave in frequency time plane Then the modulation frequency Fm is default as 1KHz It can be adjusted as 0 25 0 5 1 2 4 5 8 and 10KHz if customer wants upgrade The limitation of parameter set is maximum sample frequency of ADC is 2 5MHz each CH for 2 ADC CHs So that maximum fb fb 4BFm C Rmax fdmax should be less than 1 25MHz TX of 24GHz FMCW radar default set are B 200 00MHz fo 24 12533GHz Fpdf 60 3125MHz Then DSP provides 180 19 181 69MHz FMCW signals to TX of front end The maximum detect range is 200m The Doppler frequency is 161Hz for 1m sec Then max range return frequ
14. offset of antenna beam Mono pulse radar map is selected to show photo clearly igur A Fe Edt Vew Insert Took Desktop Window Hep VEW FUSCAN VEWSEU UN SLAN x niy ZZ x ut a Ee F 4 0 igo Wo eee 6 4 Ni trate save cur Lipan Page Cata ee Pat deboctes MOREL www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 12 Changxiang Electronics Ltd 6 4 4 Function of Radar map Operate Key There are 4 operate keys on Radar display screen They are Fig 7 has clear picture 1 2 3 4 Exit key press exit will end radar map display Enable Save key Press enable save key will save radar data in text format to file named runfmcw Operator can fid this file in follow patch C Matlab7 work tcp_udp_ip runfmcw The radar data will be saved page by page as long as memory size is larger enough or exit key is pressed Clear Key press Clear will clear all data stored in runfmacw file Operator must rename runfmcw if they want keep old test data Upload Page Data Key Press this key code will record radar data and stored them to file named fmcw Operator can fid this file in follow patch C Matlab7 work tcp_udp_ip fmcw This file only store last 15 pages of radar data And fresh them when page number is increased It is required to press stop key show in Fig 5 Note Fig 5 RADAR GO in red color indicates start after press start it changes to s
15. or operator to operate the radar or see target by eye With the help of host computer and radar map code FMCW radar brown host PC screen and key broad to run the radar and recorder all radar data Follow is the list parts for FMCW radar Fundament parts Radar Front end ELEC 24GHz FMCW front end 24G T1R2 WS WB2 refer fig 2 Radar Back end ELEC DSP board DSP User CD ELEC FMCW radar map code Cables DB9 to DB9 cable Ethernet cable 3 SMA to SMA Optional parts Power Supplies Capability to generate 9V 600mA 5V 60mA 5 5V 30mA 5V 60mA dc Host PC Operating System Windows XP Processor Pentium 4 2 0G or better Memory 2GB or better Software Matlab 7 0 ELEC just provide trial version in 45days 6 2 Setting Up the FMCW Radar Setup Matlab 7 0 1 Copy X code Matlab tcp_udp_ip to C MATLAB7 work 2 Double click icon MATLAB7 on desktop to launch matlab 3 Click and set Current Directory to C MATLAB7 work tcp_udp_ip 4 Type radar in Command Window and press ENTER to launch radar map program Setup Web 5 Connect DSP board with computer using Ethernet cable 6 Right click My Network Places and select Properties in order to open Network Connections 7 Right click Local Area Connection and select Properties 8 Select Internet Protocol TCP IP gt Properties On the Internet Protocol TCP IP Properties page select Use the following IP address and set the IP addre
16. predict range next time after 50ms radar see them again It cones from current range and velocity Vel at row 4 Most of them is static target 5cm s 9cm s 0 6m s 9cm s 11cm s and 12cm s Part of them has velocity at 2 8m s 1 8m s 4 8m s and 1 6m s The 5 row gives target amplitude from 40dBm to 65dBm all of them are larger than 70dBm The 6th row is Az angle Because no scan all of them is at O degree The 7 row is El angle The last row is time predict when target touch radar The negative means target is moving away from radar The danger is the target moving forward radar Target 6 will touch radar after 28 seconds www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 15 Changxiang 7 Typical 24GHz Radar Specification Changxiang Electronics Ltd Sign Unit Value Range Recommend Front End Transmit power Pt dBm 6 8 Carrier frequency Fe GHz 24 125 0 0005 Fm must be F t Swept Band B MHz 200 default up to 1GHz If license approved Modulation Fm KHz 1 10 1KHz default Waveform triangle wave Linearity L 0 05 Fm F t Antenna Type Dual patch array In Azimuth direction Antenna Gain G dB 23 24 Azimuth 3db beam AZ degree 10 4 0 8 Elevation 3dB beam El degree 8 24 0 5 Side lobe Aside dB 16 25 Isolation Iso dBc gt 50 RX only 10 20 TR share 1
17. ss as 192 168 1 77 set Subnet mask as 255 255 255 0 And then click OK to save the configuration www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 10 Changxiang Electronics Ltd Setup FMCW Radar Connect the Radar front end and back end with the DB9 to DB9 cable And 3 SMA Cables Connecting the back end DSP box Banana plugs to DC power supplies 9V 5V 3V and 5V Connecting the back end DSP box USB interface to host computer by USB cable Turn on all DC supplies If not turn on in the same time turn on 5V before turn on 3V 6 3 Operate FMCW Radar 1 After DSP board and front end is turned on open the internet browser on computer and type http 192 168 1 11 index html then Radar Operate Parameter Window appears for user to adjust radar parameters as Fig 5 shows 2 Radar Operate parameter Windows Internet Explorer gt e 192 16 Rx b File Edit View avorites Tools Help Sr Favorites 55 Free Hotmail Get More Add ons BS Rada R X ft A J m Page Radar Operate parameter Fill in the form fields and hit STAR Operate Setting Rmax m 0 00 Rmin m _ 0 00 Aref dbm 0 00 RADAR GO START Internet fq z 100 N Fig5 Radar Operate Parameter Window 2 For radar data Rmin Om Rmax 200m and Aref 70dBm As mentioned before radar data will recorder all targets which amplitude larger t
18. top which means radar is run and waiting stop Then read last 15 page of radar data in fmew file Fig 7 Person at 35m with Truck at 44 48m both offset antenna maximum beam line www changxiangelec com 525 Chesterfield Lane North Aurora IL 60542 Tel 630 882 2623 Page 13 Changxiang Electronics Ltd 6 4 5 Radar Data Format ELEC FMCW radar code generates Fm signal for TX DSP finish ADC convert and FFT twice for each Fm period The rule to select target is compare FFT signals amplitude with Aref When Fm 1KHz DSP analyzes return signal every 0 5ms So it gets positive slop and negative slop frequency in 1ms and future convert them as range and velocity with amplitude parameters Because DSP process 2CHs compare their phase get mono pulse angle Default is in Elevation plan For Azimuth mono pulse radar just process EL parameter as Az parameter ELEC FMCW code still has ability to drive stepper motor for mechanical scan Default is in Az plane So Az plane has 3 choice fixed beam with or without mono pulse 360 scan and sector scan Anyway Code sees target targets 1 time in 1 Fm period Code will see target Nc times and average them together as radar data cell in Nc of Fm period Usually Nc gt 5 For mechanical scan each Az angle typical is stepper motor stepper 1 8 degrees has 1 radar data cell 1 complete scan generates radar data So there are 200 radar data cells in one page of radar data The number of radar dat
Download Pdf Manuals
Related Search